tmux

TMUX(1) General Commands Manual TMUX(1)

NAME

   tmux  terminal multiplexer

SYNOPSIS

   tmux [-2CDlNuVv] [-c shell-command] [-f file] [-L socket-name] [-S socket-path] [-T features] [command [flags]]

DESCRIPTION

   tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen.  tmux may be detached from a screen and continue running
   in the background, then later reattached.

   When  tmux is started, it creates a new session with a single window and displays it on screen.  A status line at the bottom of the screen shows information on the current session and
   is used to enter interactive commands.

   A session is a single collection of pseudo terminals under the management of tmux.  Each session has one or more windows linked to it.  A window occupies the entire screen and may  be
   split  into  rectangular panes, each of which is a separate pseudo terminal (the pty(4) manual page documents the technical details of pseudo terminals).  Any number of tmux instances
   may connect to the same session, and any number of windows may be present in the same session.  Once all sessions are killed, tmux exits.

   Each session is persistent and will survive accidental disconnection (such as ssh(1) connection timeout) or intentional detaching (with the C-b d key strokes).  tmux  may  be  reat
   tached using:

         $ tmux attach

   In  tmux,  a session is displayed on screen by a client and all sessions are managed by a single server.  The server and each client are separate processes which communicate through a
   socket in /tmp.

   The options are as follows:

   -2            Force tmux to assume the terminal supports 256 colours.  This is equivalent to -T 256.

   -C            Start in control mode (see the CONTROL MODE section).  Given twice (-CC) disables echo.

   -c shell-command
                 Execute shell-command using the default shell.  If necessary, the tmux server will be started to retrieve the default-shell option.  This  option  is  for  compatibility
                 with sh(1) when tmux is used as a login shell.

   -D            Do not start the tmux server as a daemon.  This also turns the exit-empty option off.  With -D, command may not be specified.

   -f file       Specify  an  alternative  configuration  file.  By default, tmux loads the system configuration file from /etc/tmux.conf, if present, then looks for a user configuration
                 file at ~/.tmux.conf or $XDG_CONFIG_HOME/tmux/tmux.conf.

                 The configuration file is a set of tmux commands which are executed in sequence when the server is first started.  tmux loads configuration files once  when  the  server
                 process has started.  The source-file command may be used to load a file later.

                 tmux shows any error messages from commands in configuration files in the first session created, and continues to process the rest of the configuration file.

   -L socket-name
                 tmux  stores the server socket in a directory under TMUX_TMPDIR or /tmp if it is unset.  The default socket is named default.  This option allows a different socket name
                 to be specified, allowing several independent tmux servers to be run.  Unlike -S a full path is not necessary: the sockets are all created in a directory tmux-UID  under
                 the directory given by TMUX_TMPDIR or in /tmp.  The tmux-UID directory is created by tmux and must not be world readable, writable or executable.

                 If  the  socket is accidentally removed, the SIGUSR1 signal may be sent to the tmux server process to recreate it (note that this will fail if any parent directories are
                 missing).

   -l            Behave as a login shell.  This flag currently has no effect and is for compatibility with other shells when using tmux as a login shell.

   -N            Do not start the server even if the command would normally do so (for example new-session or start-server).

   -S socket-path
                 Specify a full alternative path to the server socket.  If -S is specified, the default socket directory is not used and any -L flag is ignored.

   -T features   Set terminal features for the client.  This is a comma-separated list of features.  See the terminal-features option.

   -u            Write UTF-8 output to the terminal even if the first environment variable of LC_ALL, LC_CTYPE, or LANG that is set does not contain "UTF-8" or "UTF8".

   -V            Report the tmux version.

   -v            Request verbose logging.  Log messages will be saved into tmux-client-PID.log and tmux-server-PID.log files in the current directory, where PID is the PID of the  server
                 or client process.  If -v is specified twice, an additional tmux-out-PID.log file is generated with a copy of everything tmux writes to the terminal.

                 The SIGUSR2 signal may be sent to the tmux server process to toggle logging between on (as if -v was given) and off.

   command [flags]
                 This specifies one of a set of commands used to control tmux, as described in the following sections.  If no commands are specified, the new-session command is assumed.

DEFAULT KEY BINDINGS

   tmux may be controlled from an attached client by using a key combination of a prefix key, C-b (Ctrl-b) by default, followed by a command key.

   The default command key bindings are:

         C-b         Send the prefix key (C-b) through to the application.
         C-o         Rotate the panes in the current window forwards.
         C-z         Suspend the tmux client.
         !           Break the current pane out of the window.
         "           Split the current pane into two, top and bottom.
         #           List all paste buffers.
         $           Rename the current session.
         %           Split the current pane into two, left and right.
         &           Kill the current window.
         '           Prompt for a window index to select.
         (           Switch the attached client to the previous session.
         )           Switch the attached client to the next session.
         ,           Rename the current window.
         -           Delete the most recently copied buffer of text.
         .           Prompt for an index to move the current window.
         0 to 9      Select windows 0 to 9.
         :           Enter the tmux command prompt.
         ;           Move to the previously active pane.
         =           Choose which buffer to paste interactively from a list.
         ?           List all key bindings.
         D           Choose a client to detach.
         L           Switch the attached client back to the last session.
         [           Enter copy mode to copy text or view the history.
         ]           Paste the most recently copied buffer of text.
         c           Create a new window.
         d           Detach the current client.
         f           Prompt to search for text in open windows.
         i           Display some information about the current window.
         l           Move to the previously selected window.
         m           Mark the current pane (see select-pane -m).
         M           Clear the marked pane.
         n           Change to the next window.
         o           Select the next pane in the current window.
         p           Change to the previous window.
         q           Briefly display pane indexes.
         r           Force redraw of the attached client.
         s           Select a new session for the attached client interactively.
         t           Show the time.
         w           Choose the current window interactively.
         x           Kill the current pane.
         z           Toggle zoom state of the current pane.
         {           Swap the current pane with the previous pane.
         }           Swap the current pane with the next pane.
         ~           Show previous messages from tmux, if any.
         Page Up     Enter copy mode and scroll one page up.
         Up, Down
         Left, Right
                     Change to the pane above, below, to the left, or to the right of the current pane.
         M-1 to M-5  Arrange panes in one of the seven preset layouts: even-horizontal, even-vertical, main-horizontal, main-horizontal-mirrored, main-vertical, main-vertical, or tiled.
         Space       Arrange the current window in the next preset layout.
         M-n         Move to the next window with a bell or activity marker.
         M-o         Rotate the panes in the current window backwards.
         M-p         Move to the previous window with a bell or activity marker.
         C-Up, C-Down
         C-Left, C-Right
                     Resize the current pane in steps of one cell.
         M-Up, M-Down
         M-Left, M-Right
                     Resize the current pane in steps of five cells.

   Key bindings may be changed with the bind-key and unbind-key commands.

COMMAND PARSING AND EXECUTION

   tmux  supports  a  large number of commands which can be used to control its behaviour.  Each command is named and can accept zero or more flags and arguments.  They may be bound to a
   key with the bind-key command or run from the shell prompt, a shell script, a configuration file or the command prompt.  For example, the same set-option command run  from  the  shell
   prompt, from ~/.tmux.conf and bound to a key may look like:

         $ tmux set-option -g status-style bg=cyan

         set-option -g status-style bg=cyan

         bind-key C set-option -g status-style bg=cyan

   Here, the command name is set-option, -g is a flag and status-style and bg=cyan are arguments.

   tmux  distinguishes  between  command  parsing and execution.  In order to execute a command, tmux needs it to be split up into its name and arguments.  This is command parsing.  If a
   command is run from the shell, the shell parses it; from inside tmux or from a configuration file, tmux does.  Examples of when tmux parses commands are:

         -   in a configuration file;

         -   typed at the command prompt (see command-prompt);

         -   given to bind-key;

         -   passed as arguments to if-shell or confirm-before.

   To execute commands, each client has a command queue.  A global command queue not attached to any client is used on startup for configuration files like ~/.tmux.conf.   Parsed  com
   mands  added  to  the  queue  are executed in order.  Some commands, like if-shell and confirm-before, parse their argument to create a new command which is inserted immediately after
   themselves.  This means that arguments can be parsed twice or more - once when the parent command (such as if-shell) is parsed and again when it parses and executes its command.  Com
   mands like if-shell, run-shell and display-panes stop execution of subsequent commands on the queue until something happens - if-shell and run-shell until a shell command finishes and
   display-panes until a key is pressed.  For example, the following commands:

         new-session; new-window
         if-shell "true" "split-window"
         kill-session

   Will execute new-session, new-window, if-shell, the shell command true(1), split-window and kill-session in that order.

   The COMMANDS section lists the tmux commands and their arguments.

PARSING SYNTAX

   This section describes the syntax of commands parsed by tmux, for example in a configuration file or at the command prompt.  Note that when commands are entered into the  shell,  they
   are parsed by the shell - see for example ksh(1) or csh(1).

   Each command is terminated by a newline or a semicolon (;).  Commands separated by semicolons together form a command sequence - if a command in the sequence encounters an error, no
   subsequent commands are executed.

   It is recommended that a semicolon used as a command separator should be written as an individual token, for example from sh(1):

         $ tmux neww \; splitw

   Or:

         $ tmux neww ';' splitw

   Or from the tmux command prompt:

         neww ; splitw

   However, a trailing semicolon is also interpreted as a command separator, for example in these sh(1) commands:

         $ tmux neww\; splitw

   Or:

         $ tmux 'neww;' splitw

   As in these examples, when running tmux from the shell extra care must be taken to properly quote semicolons:

         1.   Semicolons that should be interpreted as a command separator should be escaped according to the shell conventions.  For sh(1) this typically means quoted (such as neww ';'
              splitw) or escaped (such as neww \\\\; splitw).

         2.   Individual  semicolons or trailing semicolons that should be interpreted as arguments should be escaped twice: once according to the shell conventions and a second time for
              tmux; for example:

                    $ tmux neww 'foo\\;' bar
                    $ tmux neww foo\\\\; bar

         3.   Semicolons that are not individual tokens or trailing another token should only be escaped once according to shell conventions; for example:

                    $ tmux neww 'foo-;-bar'
                    $ tmux neww foo-\\;-bar

   Comments are marked by the unquoted # character - any remaining text after a comment is ignored until the end of the line.

   If the last character of a line is \, the line is joined with the following line (the \ and the newline are completely removed).  This is called line continuation and applies both in
   side and outside quoted strings and in comments, but not inside braces.

   Command arguments may be specified as strings surrounded by single (') quotes, double quotes (") or braces ({}).  This is required when the argument contains  any  special  character.
   Single and double quoted strings cannot span multiple lines except with line continuation.  Braces can span multiple lines.

   Outside of quotes and inside double quotes, these replacements are performed:

         -   Environment variables preceded by $ are replaced with their value from the global environment (see the “GLOBAL AND SESSION ENVIRONMENT” section).

         -   A leading ~ or ~user is expanded to the home directory of the current or specified user.

         -   \uXXXX or \uXXXXXXXX is replaced by the Unicode codepoint corresponding to the given four or eight digit hexadecimal number.

         -   When preceded (escaped) by a \, the following characters are replaced: \e by the escape character; \r by a carriage return; \n by a newline; and \t by a tab.

         -   \ooo is replaced by a character of the octal value ooo.  Three octal digits are required, for example \001.  The largest valid character is \377.

         -   Any other characters preceded by \ are replaced by themselves (that is, the \ is removed) and are not treated as having any special meaning - so for example \; will not mark
             a command sequence and \$ will not expand an environment variable.

   Braces  are  parsed  as a configuration file (so conditions such as ‘%if’ are processed) and then converted into a string.  They are designed to avoid the need for additional escaping
   when passing a group of tmux commands as an argument (for example to if-shell).  These two examples produce an identical command - note that no escaping is needed when using {}:

         if-shell true {
             display -p 'brace-dollar-foo: }$foo'
         }

         if-shell true "display -p 'brace-dollar-foo: }\$foo'"

   Braces may be enclosed inside braces, for example:

         bind x if-shell "true" {
             if-shell "true" {
                 display "true!"
             }
         }

   Environment variables may be set by using the syntax ‘name=value’, for example ‘HOME=/home/user’.  Variables set during parsing are added to the global environment.  A hidden variable
   may be set with ‘%hidden’, for example:

         %hidden MYVAR=42

   Hidden variables are not passed to the environment of processes created by tmux.  See the “GLOBAL AND SESSION ENVIRONMENT” section.

   Commands may be parsed conditionally by surrounding them with ‘%if’, ‘%elif’, ‘%else’ and ‘%endif’.  The argument to ‘%if’ and ‘%elif’ is expanded as a format (see “FORMATS”)  and  if
   it evaluates to false (zero or empty), subsequent text is ignored until the closing ‘%elif’, ‘%else’ or ‘%endif’.  For example:

         %if "#{==:#{host},myhost}"
         set -g status-style bg=red
         %elif "#{==:#{host},myotherhost}"
         set -g status-style bg=green
         %else
         set -g status-style bg=blue
         %endif

   Will change the status line to red if running on myhost, green if running on myotherhost, or blue if running on another host.  Conditionals may be given on one line, for example:

         %if #{==:#{host},myhost} set -g status-style bg=red %endif

COMMANDS

   This  section  describes the commands supported by tmux.  Most commands accept the optional -t (and sometimes -s) argument with one of target-client, target-session, target-window, or
   target-pane.  These specify the client, session, window or pane which a command should affect.

   target-client should be the name of the client, typically the pty(4) file to which the client is connected, for example either of /dev/ttyp1  or  ttyp1  for  the  client  attached  to
   /dev/ttyp1.   If  no client is specified, tmux attempts to work out the client currently in use; if that fails, an error is reported.  Clients may be listed with the list-clients com
   mand.

   target-session is tried as, in order:

         1.   A session ID prefixed with a $.

         2.   An exact name of a session (as listed by the list-sessions command).

         3.   The start of a session name, for example mysess would match a session named mysession.

         4.   An fnmatch(3) pattern which is matched against the session name.

   If the session name is prefixed with an =, only an exact match is accepted (so =mysess will only match exactly mysess, not mysession).

   If a single session is found, it is used as the target session; multiple matches produce an error.  If a session is omitted, the current session is used if available;  if  no  current
   session is available, the most recently used is chosen.

   target-window (or src-window or dst-window) specifies a window in the form session:window.  session follows the same rules as for target-session, and window is looked for in order as:

         1.   A special token, listed below.

         2.   A window index, for example mysession:1 is window 1 in session mysession.

         3.   A window ID, such as @1.

         4.   An exact window name, such as mysession:mywindow.

         5.   The start of a window name, such as mysession:mywin.

         6.   As an fnmatch(3) pattern matched against the window name.

   Like  sessions,  a  =  prefix will do an exact match only.  An empty window name specifies the next unused index if appropriate (for example the new-window and link-window commands)
   otherwise the current window in session is chosen.

   The following special tokens are available to indicate particular windows.  Each has a single-character alternative form.

   Token              Meaning
   {start}       ^    The lowest-numbered window
   {end}         $    The highest-numbered window
   {last}        !    The last (previously current) window
   {next}        +    The next window by number
   {previous}    -    The previous window by number

   target-pane (or src-pane or dst-pane) may be a pane ID or takes a similar form to target-window but with the optional addition of a period followed by a pane index or pane ID, for ex
   ample: mysession:mywindow.1.  If the pane index is omitted, the currently active pane in the specified window is used.  The following special tokens are available for the  pane  in
   dex:

   Token                  Meaning
   {last}            !    The last (previously active) pane
   {next}            +    The next pane by number
   {previous}        -    The previous pane by number
   {top}                  The top pane
   {bottom}               The bottom pane
   {left}                 The leftmost pane
   {right}                The rightmost pane
   {top-left}             The top-left pane
   {top-right}            The top-right pane
   {bottom-left}          The bottom-left pane
   {bottom-right}         The bottom-right pane
   {up-of}                The pane above the active pane
   {down-of}              The pane below the active pane
   {left-of}              The pane to the left of the active pane
   {right-of}             The pane to the right of the active pane

   The tokens + and - may be followed by an offset, for example:

         select-window -t:+2

   In  addition, target-session, target-window or target-pane may consist entirely of the token {mouse} (alternative form =) to specify the session, window or pane where the most re
   cent mouse event occurred (see the MOUSE SUPPORT section) or {marked} (alternative form ~) to specify the marked pane (see select-pane -m).

   Sessions, window and panes are each numbered with a unique ID; session IDs are prefixed with a $, windows with a @, and panes with a %.  These are unique and are  unchanged  for
   the  life of the session, window or pane in the tmux server.  The pane ID is passed to the child process of the pane in the TMUX_PANE environment variable.  IDs may be displayed using
   the session_id, window_id, or pane_id formats (see the FORMATS section) and the display-message, list-sessions, list-windows or list-panes commands.

   shell-command arguments are sh(1) commands.  This may be a single argument passed to the shell, for example:

         new-window 'vi ~/.tmux.conf'

   Will run:

         /bin/sh -c 'vi ~/.tmux.conf'

   Additionally, the new-window, new-session, split-window, respawn-window and respawn-pane commands allow shell-command to be given as multiple arguments and executed directly  (without
   sh -c).  This can avoid issues with shell quoting.  For example:

         $ tmux new-window vi ~/.tmux.conf

   Will run vi(1) directly without invoking the shell.

   command [argument ...] refers to a tmux command, either passed with the command and arguments separately, for example:

         bind-key F1 set-option status off

   Or passed as a single string argument in .tmux.conf, for example:

         bind-key F1 { set-option status off }

   Example tmux commands include:

         refresh-client -t/dev/ttyp2

         rename-session -tfirst newname

         set-option -wt:0 monitor-activity on

         new-window ; split-window -d

         bind-key R source-file ~/.tmux.conf \; \
                 display-message "source-file done"

   Or from sh(1):

         $ tmux kill-window -t :1

         $ tmux new-window \; split-window -d

         $ tmux new-session -d 'vi ~/.tmux.conf' \; split-window -d \; attach

CLIENTS AND SESSIONS

   The  tmux  server  manages clients, sessions, windows and panes.  Clients are attached to sessions to interact with them, either when they are created with the new-session command, or
   later with the attach-session command.  Each session has one or more windows linked into it.  Windows may be linked to multiple sessions and are made up of one or more panes, each  of
   which contains a pseudo terminal.  Commands for creating, linking and otherwise manipulating windows are covered in the WINDOWS AND PANES section.

   The following commands are available to manage clients and sessions:

   attach-session [-dErx] [-c working-directory] [-f flags] [-t target-session]
                 (alias: attach)
           If  run from outside tmux, attach to target-session in the current terminal.  target-session must already exist - to create a new session, see the new-session command (with -A
           to create or attach).  If used from inside, switch the currently attached session to target-session.  If -d is specified, any other clients attached to  the  session  are  de
           tached.   If  -x  is  given,  send SIGHUP to the parent process of the client as well as detaching the client, typically causing it to exit.  -f sets a comma-separated list of
           client flags.  The flags are:

           active-pane
                   the client has an independent active pane

           ignore-size
                   the client does not affect the size of other clients

           no-output
                   the client does not receive pane output in control mode

           pause-after=seconds
                   output is paused once the pane is seconds behind in control mode

           read-only
                   the client is read-only

           wait-exit
                   wait for an empty line input before exiting in control mode

           A leading ! turns a flag off if the client is already attached.  -r is an alias for  -f  read-only,ignore-size.   When  a  client  is  read-only,  only  keys  bound  to  the
           detach-client  or  switch-client  commands have any effect.  A client with the active-pane flag allows the active pane to be selected independently of the window's active pane
           used by clients without the flag.  This only affects the cursor position and commands issued from the client; other features such as hooks and styles continue to use the  win‐
           dow's active pane.

           If no server is started, attach-session will attempt to start it; this will fail unless sessions are created in the configuration file.

           The  target-session  rules  for  attach-session are slightly adjusted: if tmux needs to select the most recently used session, it will prefer the most recently used unattached
           session.

           -c will set the session working directory (used for new windows) to working-directory.

           If -E is used, the update-environment option will not be applied.

   detach-client [-aP] [-E shell-command] [-s target-session] [-t target-client]
                 (alias: detach)
           Detach the current client if bound to a key, the client specified with -t, or all clients currently attached to the session specified by -s.  The -a option kills all  but  the
           client given with -t.  If -P is given, send SIGHUP to the parent process of the client, typically causing it to exit.  With -E, run shell-command to replace the client.

   has-session [-t target-session]
                 (alias: has)
           Report an error and exit with 1 if the specified session does not exist.  If it does exist, exit with 0.

   kill-server
           Kill the tmux server and clients and destroy all sessions.

   kill-session [-aC] [-t target-session]
           Destroy  the  given  session, closing any windows linked to it and no other sessions, and detaching all clients attached to it.  If -a is given, all sessions but the specified
           one is killed.  The -C flag clears alerts (bell, activity, or silence) in all windows linked to the session.

   list-clients [-F format] [-f filter] [-t target-session]
                 (alias: lsc)
           List all clients attached to the server.  -F specifies the format of each line and -f a filter.  Only clients for which the filter is true are shown.  See the  FORMATS  sec
           tion.  If target-session is specified, list only clients connected to that session.

   list-commands [-F format] [command]
                 (alias: lscm)
           List the syntax of command or - if omitted - of all commands supported by tmux.

   list-sessions [-F format] [-f filter]
                 (alias: ls)
           List  all sessions managed by the server.  -F specifies the format of each line and -f a filter.  Only sessions for which the filter is true are shown.  See the FORMATS sec
           tion.

   lock-client [-t target-client]
                 (alias: lockc)
           Lock target-client, see the lock-server command.

   lock-session [-t target-session]
                 (alias: locks)
           Lock all clients attached to target-session.

   new-session [-AdDEPX] [-c start-directory] [-e environment] [-f flags] [-F format] [-n window-name] [-s session-name] [-t group-name] [-x width] [-y height] [shell-command]
                 (alias: new)
           Create a new session with name session-name.

           The new session is attached to the current terminal unless -d is given.  window-name and shell-command are the name of and shell command to  execute  in  the  initial  window.
           With -d, the initial size comes from the global default-size option; -x and -y can be used to specify a different size.  - uses the size of the current client if any.  If -x
           or -y is given, the default-size option is set for the session.  -f sets a comma-separated list of client flags (see attach-session).

           If run from a terminal, any termios(4) special characters are saved and used for new windows in the new session.

           The  -A  flag  makes  new-session  behave  like  attach-session if session-name already exists; if -A is given, -D behaves like -d to attach-session, and -X behaves like -x to
           attach-session.

           If -t is given, it specifies a session group.  Sessions in the same group share the same set of windows - new windows are linked to all sessions in the group and  any  windows
           closed  removed  from  all sessions.  The current and previous window and any session options remain independent and any session in a group may be killed without affecting the
           others.  The group-name argument may be:

           1.      the name of an existing group, in which case the new session is added to that group;

           2.      the name of an existing session - the new session is added to the same group as that session, creating a new group if necessary;

           3.      the name for a new group containing only the new session.

           -n and shell-command are invalid if -t is used.

           The -P option prints information about the new session after it has been created.  By default, it uses the format #{session_name}:’ but a different format  may  be  specified
           with -F.

           If -E is used, the update-environment option will not be applied.  -e takes the form VARIABLE=value and sets an environment variable for the newly created session; it may be
           specified multiple times.

   refresh-client [-cDLRSU] [-A pane:state] [-B name:what:format] [-C size] [-f flags] [-l [target-pane]] [-r pane:report] [-t target-client] [adjustment]
                 (alias: refresh)
           Refresh the current client if bound to a key, or a single client if one is given with -t.  If -S is specified, only update the client's status line.

           The  -U,  -D,  -L -R, and -c flags allow the visible portion of a window which is larger than the client to be changed.  -U moves the visible part up by adjustment rows and -D
           down, -L left by adjustment columns and -R right.  -c returns to tracking the cursor automatically.  If adjustment is omitted, 1 is used.  Note that the visible position is  a
           property of the client not of the window, changing the current window in the attached session will reset it.

           -C  sets  the  width  and height of a control mode client or of a window for a control mode client, size must be one of ‘widthxheight’ or ‘window ID:widthxheight’, for example
           ‘80x24’ or ‘@0:80x24’.  -A allows a control mode client to trigger actions on a pane.  The argument is a pane ID (with  leading  ‘%’),  a  colon,  then  one  of  ‘on’,  ‘off’,
           ‘continue’  or  ‘pause’.   If  ‘off’,  tmux  will not send output from the pane to the client and if all clients have turned the pane off, will stop reading from the pane.  If
           ‘continue’, tmux will return to sending output to the pane if it was paused (manually or with the pause-after flag).  If ‘pause’, tmux will pause the pane.  -A  may  be  given
           multiple times for different panes.

           -B sets a subscription to a format for a control mode client.  The argument is split into three items by colons: name is a name for the subscription; what is a type of item to
           subscribe  to; format is the format.  After a subscription is added, changes to the format are reported with the %subscription-changed notification, at most once a second.  If
           only the name is given, the subscription is removed.  what may be empty to check the format only for the attached session, or one of: a pane ID such  as  ‘%0’;  ‘%*’  for  all
           panes in the attached session; a window ID such as ‘@0’; or ‘@*’ for all windows in the attached session.

           -f  sets a comma-separated list of client flags, see attach-session.  -r allows a control mode client to provide information about a pane via a report (such as the response to
           OSC 10).  The argument is a pane ID (with a leading ‘%’), a colon, then a report escape sequence.

           -l requests the clipboard from the client using the xterm(1) escape sequence.  If target-pane is given, the clipboard is sent (in encoded form), otherwise it is  stored  in  a
           new paste buffer.

           -L,  -R,  -U and -D move the visible portion of the window left, right, up or down by adjustment, if the window is larger than the client.  -c resets so that the position fol‐
           lows the cursor.  See the window-size option.

   rename-session [-t target-session] new-name
                 (alias: rename)
           Rename the session to new-name.

   server-access [-adlrw] [user]
           Change the access or read/write permission of user.  The user running the tmux server (its owner) and the root user cannot be changed and are always permitted access.

           -a and -d are used to give or revoke access for the specified user.  If the user is already attached, the -d flag causes their clients to be detached.

           -r and -w change the permissions for user: -r makes their clients read-only and -w writable.  -l lists current access permissions.

           By default, the access list is empty and tmux creates sockets with file system permissions preventing access by any user other than the owner (and  root).   These  permissions
           must be changed manually.  Great care should be taken not to allow access to untrusted users even read-only.

   show-messages [-JT] [-t target-client]
                 (alias: showmsgs)
           Show  server  messages  or  information.  Messages are stored, up to a maximum of the limit set by the message-limit server option.  -J and -T show debugging information about
           jobs and terminals.

   source-file [-Fnqv] [-t target-pane] path ...
                 (alias: source)
           Execute commands from one or more files specified by path (which may be glob(7) patterns).  If -F is present, then path is expanded as a format.  If -q is given, no error will
           be returned if path does not exist.  With -n, the file is parsed but no commands are executed.  -v shows the parsed commands and line numbers if possible.

   start-server
                 (alias: start)
           Start the tmux server, if not already running, without creating any sessions.

           Note that as by default the tmux server will exit with no sessions, this is only useful if a session is created in ~/.tmux.conf, exit-empty is turned off, or  another  command
           is run as part of the same command sequence.  For example:

                 $ tmux start \; show -g

   suspend-client [-t target-client]
                 (alias: suspendc)
           Suspend a client by sending SIGTSTP (tty stop).

   switch-client [-ElnprZ] [-c target-client] [-t target-session] [-T key-table]
                 (alias: switchc)
           Switch  the current session for client target-client to target-session.  As a special case, -t may refer to a pane (a target that contains ‘:’, ‘.’ or ‘%’), to change session,
           window and pane.  In that case, -Z keeps the window zoomed if it was zoomed.  If -l, -n or -p is used, the client is moved to the last, next or previous session  respectively.
           -r toggles the client read-only and ignore-size flags (see the attach-session command).

           If -E is used, update-environment option will not be applied.

           -T  sets  the  client's key table; the next key from the client will be interpreted from key-table.  This may be used to configure multiple prefix keys, or to bind commands to
           sequences of keys.  For example, to make typing abc run the list-keys command:

                 bind-key -Ttable2 c list-keys
                 bind-key -Ttable1 b switch-client -Ttable2
                 bind-key -Troot   a switch-client -Ttable1

WINDOWS AND PANES

   Each window displayed by tmux may be split into one or more panes; each pane takes up a certain area of the display and is a separate terminal.  A window may be split into panes using
   the split-window command.  Windows may be split horizontally (with the -h flag) or vertically.  Panes may be resized with the resize-pane command (bound to C-Up,  C-Down  C-Left
   and  C-Right  by default), the current pane may be changed with the select-pane command and the rotate-window and swap-pane commands may be used to swap panes without changing their
   position.  Panes are numbered beginning from zero in the order they are created.

   By default, a tmux pane permits direct access to the terminal contained in the pane.  A pane may also be put into one of several modes:

         -   Copy mode, which permits a section of a window or its history to be copied to a paste buffer for later insertion  into  another  window.   This  mode  is  entered  with  the
             copy-mode command, bound to [ by default.  Copied text can be pasted with the paste-buffer command, bound to ].

         -   View mode, which is like copy mode but is entered when a command that produces output, such as list-keys, is executed from a key binding.

         -   Choose  mode,  which  allows an item to be chosen from a list.  This may be a client, a session or window or pane, or a buffer.  This mode is entered with the choose-buffer,
             choose-client and choose-tree commands.

   In copy mode an indicator is displayed in the top-right corner of the pane with the current position and the number of lines in the history.

   Commands are sent to copy mode using the -X flag to the send-keys command.  When a key is pressed, copy mode automatically uses one of two key tables, depending on the  mode-keys  op
   tion: copy-mode for emacs, or copy-mode-vi for vi.  Key tables may be viewed with the list-keys command.

   The following commands are supported in copy mode:

   append-selection
           Append the selection to the top paste buffer.

   append-selection-and-cancel (vi: A)
           Append the selection to the top paste buffer and exit copy mode.

   back-to-indentation (vi: ^) (emacs: M-m)
           Move the cursor back to the indentation.

   begin-selection (vi: Space) (emacs: C-Space)
           Begin selection.

   bottom-line (vi: L)
           Move to the bottom line.

   cancel (vi: q) (emacs: Escape)
           Exit copy mode.

   clear-selection (vi: Escape) (emacs: C-g)
           Clear the current selection.

   copy-end-of-line [prefix]
           Copy from the cursor position to the end of the line.  prefix is used to name the new paste buffer.

   copy-end-of-line-and-cancel [prefix]
           Copy from the cursor position and exit copy mode.

   copy-pipe-end-of-line [command] [prefix]
           Copy from the cursor position to the end of the line and pipe the text to command.  prefix is used to name the new paste buffer.

   copy-pipe-end-of-line-and-cancel [command] [prefix]
           Same as copy-pipe-end-of-line but also exit copy mode.

   copy-line [prefix]
           Copy the entire line.

   copy-line-and-cancel [prefix]
           Copy the entire line and exit copy mode.

   copy-pipe-line [command] [prefix]
           Copy the entire line and pipe the text to command.  prefix is used to name the new paste buffer.

   copy-pipe-line-and-cancel [command] [prefix]
           Same as copy-pipe-line but also exit copy mode.

   copy-pipe [command] [prefix]
           Copy the selection, clear it and pipe its text to command.  prefix is used to name the new paste buffer.

   copy-pipe-no-clear [command] [prefix]
           Same as copy-pipe but do not clear the selection.

   copy-pipe-and-cancel [command] [prefix]
           Same as copy-pipe but also exit copy mode.

   copy-selection [prefix]
           Copies the current selection.

   copy-selection-no-clear [prefix]
           Same as copy-selection but do not clear the selection.

   copy-selection-and-cancel [prefix] (vi: Enter) (emacs: M-w)
           Copy the current selection and exit copy mode.

   cursor-down (vi: j) (emacs: Down)
           Move the cursor down.

   cursor-down-and-cancel
           Same as cursor-down but also exit copy mode if reaching the bottom.

   cursor-left (vi: h) (emacs: Left)
           Move the cursor left.

   cursor-right (vi: l) (emacs: Right)
           Move the cursor right.

   cursor-up (vi: k) (emacs: Up)
           Move the cursor up.

   end-of-line (vi: $) (emacs: C-e)
           Move the cursor to the end of the line.

   goto-line line (vi: :) (emacs: g)
           Move the cursor to a specific line.

   halfpage-down (vi: C-d) (emacs: M-Down)
           Scroll down by half a page.

   halfpage-down-and-cancel
           Same as halfpage-down but also exit copy mode if reaching the bottom.

   halfpage-up (vi: C-u) (emacs: M-Up)
           Scroll up by half a page.

   history-bottom (vi: G) (emacs: M->)
           Scroll to the bottom of the history.

   history-top (vi: g) (emacs: M-<)
           Scroll to the top of the history.

   jump-again (vi: ;) (emacs: ;)
           Repeat the last jump.

   jump-backward to (vi: F) (emacs: F)
           Jump backwards to the specified text.

   jump-forward to (vi: f) (emacs: f)
           Jump forward to the specified text.

   jump-reverse (vi: ,) (emacs: ,)
           Repeat the last jump in the reverse direction (forward becomes backward and backward becomes forward).

   jump-to-backward to (vi: T)
           Jump backwards, but one character less, placing the cursor on the character after the target.

   jump-to-forward to (vi: t)
           Jump forward, but one character less, placing the cursor on the character before the target.

   jump-to-mark (vi: M-x) (emacs: M-x)
           Jump to the last mark.

   middle-line (vi: M) (emacs: M-r)
           Move to the middle line.

   next-matching-bracket (vi: %) (emacs: M-C-f)
           Move to the next matching bracket.

   next-paragraph (vi: }) (emacs: M-})
           Move to the next paragraph.

   next-prompt [-o]
           Move to the next prompt.

   next-word (vi: w)
           Move to the next word.

   next-word-end (vi: e) (emacs: M-f)
           Move to the end of the next word.

   next-space (vi: W)
           Same as next-word but use a space alone as the word separator.

   next-space-end (vi: E)
           Same as next-word-end but use a space alone as the word separator.

   other-end (vi: o)
           Switch at which end of the selection the cursor sits.

   page-down (vi: C-f) (emacs: PageDown)
           Scroll down by one page.

   page-down-and-cancel
           Same as page-down but also exit copy mode if reaching the bottom.

   page-up (vi: C-b) (emacs: PageUp)
           Scroll up by one page.

   pipe [command]
           Pipe the selected text to command and clear the selection.

   pipe-no-clear [command]
           Same as pipe but do not clear the selection.

   pipe-and-cancel [command] [prefix]
           Same as pipe but also exit copy mode.

   previous-matching-bracket (emacs: M-C-b)
           Move to the previous matching bracket.

   previous-paragraph (vi: {) (emacs: M-{)
           Move to the previous paragraph.

   previous-prompt [-o]
           Move to the previous prompt.

   previous-word (vi: b) (emacs: M-b)
           Move to the previous word.

   previous-space (vi: B)
           Same as previous-word but use a space alone as the word separator.

   rectangle-on
           Turn on rectangle selection mode.

   rectangle-off
           Turn off rectangle selection mode.

   rectangle-toggle (vi: v) (emacs: R)
           Toggle rectangle selection mode.

   refresh-from-pane (vi: r) (emacs: r)
           Refresh the content from the pane.

   scroll-bottom
           Scroll up until the current line is at the bottom while keeping the cursor on that line.

   scroll-down (vi: C-e) (emacs: C-Down)
           Scroll down.

   scroll-down-and-cancel
           Same as scroll-down but also exit copy mode if the cursor reaches the bottom.

   scroll-middle (vi: z)
           Scroll so that the current line becomes the middle one while keeping the cursor on that line.

   scroll-top
           Scroll down until the current line is at the top while keeping the cursor on that line.

   scroll-up (vi: C-y) (emacs: C-Up)
           Scroll up.

   search-again (vi: n) (emacs: n)
           Repeat the last search.

   search-backward text (vi: ?)
           Search backwards for the specified text.

   search-backward-incremental text (emacs: C-r)
           Search backwards incrementally for the specified text.  Is expected to be used with the -i flag to the command-prompt command.

   search-backward-text text
           Search backwards for the specified plain text.

   search-forward text (vi: /)
           Search forward for the specified text.

   search-forward-incremental text (emacs: C-s)
           Search forward incrementally for the specified text.  Is expected to be used with the -i flag to the command-prompt command.

   search-forward-text text
           Search forward for the specified plain text.

   search-reverse (vi: N) (emacs: N)
           Repeat the last search in the reverse direction (forward becomes backward and backward becomes forward).

   select-line (vi: V)
           Select the current line.

   select-word
           Select the current word.

   set-mark (vi: X) (emacs: X)
           Mark the current line.

   start-of-line (vi: 0) (emacs: C-a)
           Move the cursor to the start of the line.

   stop-selection
           Stop selecting without clearing the current selection.

   toggle-position (vi: P) (emacs: P)
           Toggle the visibility of the position indicator in the top right.

   top-line (vi: H) (emacs: M-R)
           Move to the top line.

   The  search commands come in several varieties: search-forward and search-backward search for a regular expression; the -text variants search for a plain text string rather than
   a regular expression; -incremental perform an incremental search and expect to be used with the -i flag to the command-prompt command.  search-again repeats the  last  search  and
   search-reverse does the same but reverses the direction (forward becomes backward and backward becomes forward).

   The  next-prompt and previous-prompt move between shell prompts, but require the shell to emit an escape sequence (\033]133;A\033\\) to tell tmux where the prompts are located; if
   the shell does not do this, these commands will do nothing.  The -o flag jumps to the beginning of the command output instead of the shell prompt.

   Copy commands may take an optional buffer prefix argument which is used to generate the buffer name (the default is buffer so buffers are named  buffer0,  buffer1  and  so  on).
   Pipe commands take a command argument which is the command to which the selected text is piped.  copy-pipe variants also copy the selection.  The -and-cancel variants of some com
   mands exit copy mode after they have completed (for copy commands) or when the cursor reaches the bottom (for scrolling commands).  -no-clear variants do not clear the selection.

   The  next  and  previous  word  keys  skip  over whitespace and treat consecutive runs of either word separators or other letters as words.  Word separators can be customized with the
   word-separators session option.  Next word moves to the start of the next word, next word end to the end of the next word and previous word to the start of  the  previous  word.   The
   three  next  and  previous  space  keys work similarly but use a space alone as the word separator.  Setting word-separators to the empty string makes next/previous word equivalent to
   next/previous space.

   The jump commands enable quick movement within a line.  For instance, typing f followed by / will move the cursor to the next / character on the current line.  A ;  will  then
   jump to the next occurrence.

   Commands in copy mode may be prefaced by an optional repeat count.  With vi key bindings, a prefix is entered using the number keys; with emacs, the Alt (meta) key and a number begins
   prefix entry.

   The synopsis for the copy-mode command is:

   copy-mode [-deHMqu] [-s src-pane] [-t target-pane]
           Enter copy mode.  -u also scrolls one page up after entering and -d one page down if already in copy mode.  -M begins a mouse drag (only valid if bound to a mouse key binding,
           see MOUSE SUPPORT).  -H hides the position indicator in the top right.  -q cancels copy mode and any other modes.  -s copies from src-pane instead of target-pane.

           -e specifies that scrolling to the bottom of the history (to the visible screen) should exit copy mode.  While in copy mode, pressing a key other than those used for scrolling
           will disable this behaviour.  This is intended to allow fast scrolling through a pane's history, for example with:

                 bind PageUp copy-mode -eu
                 bind PageDown copy-mode -ed

   A number of preset arrangements of panes are available, these are called layouts.  These may be selected with the select-layout command or cycled with next-layout (bound to ‘Space’ by
   default); once a layout is chosen, panes within it may be moved and resized as normal.

   The following layouts are supported:

   even-horizontal
           Panes are spread out evenly from left to right across the window.

   even-vertical
           Panes are spread evenly from top to bottom.

   main-horizontal
           A large (main) pane is shown at the top of the window and the remaining panes are spread from left to right in the leftover space at the bottom.  Use the main-pane-height win‐
           dow option to specify the height of the top pane.

   main-horizontal-mirrored
           The same as main-horizontal but mirrored so the main pane is at the bottom of the window.

   main-vertical
           A  large (main) pane is shown on the left of the window and the remaining panes are spread from top to bottom in the leftover space on the right.  Use the main-pane-width win‐
           dow option to specify the width of the left pane.

   main-vertical-mirrored
           The same as main-vertical but mirrored so the main pane is on the right of the window.

   tiled   Panes are spread out as evenly as possible over the window in both rows and columns.

   In addition, select-layout may be used to apply a previously used layout - the list-windows command displays the layout of each window in a form suitable for use  with  select-layout.
   For example:

         $ tmux list-windows
         0: ksh [159x48]
             layout: bb62,159x48,0,0{79x48,0,0,79x48,80,0}
         $ tmux select-layout 'bb62,159x48,0,0{79x48,0,0,79x48,80,0}'

   tmux  automatically  adjusts  the size of the layout for the current window size.  Note that a layout cannot be applied to a window with more panes than that from which the layout was
   originally defined.

   Commands related to windows and panes are as follows:

   break-pane [-abdP] [-F format] [-n window-name] [-s src-pane] [-t dst-window]
                 (alias: breakp)
           Break src-pane off from its containing window to make it the only pane in dst-window.  With -a or -b, the window is moved to the next index after or before  (existing  windows
           are  moved if necessary).  If -d is given, the new window does not become the current window.  The -P option prints information about the new window after it has been created.
           By default, it uses the format ‘#{session_name}:#{window_index}.#{pane_index}’ but a different format may be specified with -F.

   capture-pane [-aAepPqCJN] [-b buffer-name] [-E end-line] [-S start-line] [-t target-pane]
                 (alias: capturep)
           Capture the contents of a pane.  If -p is given, the output goes to stdout, otherwise to the buffer specified with -b or a new buffer if omitted.  If -a is given,  the  alter‐
           nate  screen is used, and the history is not accessible.  If no alternate screen exists, an error will be returned unless -q is given.  If -e is given, the output includes es‐
           cape sequences for text and background attributes.  -C also escapes non-printable characters as octal \xxx.  -T ignores trailing positions that do not contain a character.  -N
           preserves trailing spaces at each line's end and -J preserves trailing spaces and joins any wrapped lines; -J implies -T.  -P captures only any output that the  pane  has  re
           ceived that is the beginning of an as-yet incomplete escape sequence.

           -S  and  -E  specify the starting and ending line numbers, zero is the first line of the visible pane and negative numbers are lines in the history.  - to -S is the start of
           the history and to -E the end of the visible pane.  The default is to capture only the visible contents of the pane.

   choose-client [-NrZ] [-F format] [-f filter] [-K key-format] [-O sort-order] [-t target-pane] [template]
           Put a pane into client mode, allowing a client to be selected interactively from a list.  Each client is shown on one line.  A shortcut key is shown on the  left  in  brackets
           allowing  for  immediate  choice, or the list may be navigated and an item chosen or otherwise manipulated using the keys below.  -Z zooms the pane.  The following keys may be
           used in client mode:

                 Key    Function
                 Enter  Choose selected client
                 Up     Select previous client
                 Down   Select next client
                 C-s    Search by name
                 n      Repeat last search forwards
                 N      Repeat last search backwards
                 t      Toggle if client is tagged
                 T      Tag no clients
                 C-t    Tag all clients
                 d      Detach selected client
                 D      Detach tagged clients
                 x      Detach and HUP selected client
                 X      Detach and HUP tagged clients
                 z      Suspend selected client
                 Z      Suspend tagged clients
                 f      Enter a format to filter items
                 O      Change sort field
                 r      Reverse sort order
                 v      Toggle preview
                 q      Exit mode

           After a client is chosen, %% is replaced by the client name in template and the result executed as a command.  If template is not given, "detach-client -t '%%'" is used.

           -O specifies the initial sort field: one of name, size, creation (time), or activity (time).  -r reverses the sort order.  -f specifies an initial filter:  the  filter
           is  a  format  -  if it evaluates to zero, the item in the list is not shown, otherwise it is shown.  If a filter would lead to an empty list, it is ignored.  -F specifies the
           format for each item in the list and -K a format for each shortcut key; both are evaluated once for each line.  -N starts without the preview.  This command works only  if  at
           least one client is attached.

   choose-tree [-GNrswZ] [-F format] [-f filter] [-K key-format] [-O sort-order] [-t target-pane] [template]
           Put  a  pane  into  tree  mode, where a session, window or pane may be chosen interactively from a tree.  Each session, window or pane is shown on one line.  A shortcut key is
           shown on the left in brackets allowing for immediate choice, or the tree may be navigated and an item chosen or otherwise manipulated using the keys  below.   -s  starts  with
           sessions collapsed and -w with windows collapsed.  -Z zooms the pane.  The following keys may be used in tree mode:

                 Key    Function
                 Enter  Choose selected item
                 Up     Select previous item
                 Down   Select next item
                 +      Expand selected item
                 -      Collapse selected item
                 M-+    Expand all items
                 M--    Collapse all items
                 x      Kill selected item
                 X      Kill tagged items
                 <      Scroll list of previews left
                 >      Scroll list of previews right
                 C-s    Search by name
                 m      Set the marked pane
                 M      Clear the marked pane
                 n      Repeat last search forwards
                 N      Repeat last search backwards
                 t      Toggle if item is tagged
                 T      Tag no items
                 C-t    Tag all items
                 :      Run a command for each tagged item
                 f      Enter a format to filter items
                 H      Jump to the starting pane
                 O      Change sort field
                 r      Reverse sort order
                 v      Toggle preview
                 q      Exit mode

           After  a  session,  window or pane is chosen, the first instance of %% and all instances of %1 are replaced by the target in template and the result executed as a command.
           If template is not given, "switch-client -t '%%'" is used.

           -O specifies the initial sort field: one of index, name, or time (activity).  -r reverses the sort order.  -f specifies an initial filter: the filter is a format - if it
           evaluates to zero, the item in the list is not shown, otherwise it is shown.  If a filter would lead to an empty list, it is ignored.  -F specifies the format for each item in
           the tree and -K a format for each shortcut key; both are evaluated once for each line.  -N starts without the preview.  -G includes all sessions in any session groups  in  the
           tree rather than only the first.  This command works only if at least one client is attached.

   customize-mode [-NZ] [-F format] [-f filter] [-t target-pane] [template]
           Put a pane into customize mode, where options and key bindings may be browsed and modified from a list.  Option values in the list are shown for the active pane in the current
           window.  -Z zooms the pane.  The following keys may be used in customize mode:

                 Key    Function
                 Enter  Set pane, window, session or global option value
                 Up     Select previous item
                 Down   Select next item
                 +      Expand selected item
                 -      Collapse selected item
                 M-+    Expand all items
                 M--    Collapse all items
                 s      Set option value or key attribute
                 S      Set global option value
                 w      Set window option value, if option is for pane and window
                 d      Set an option or key to the default
                 D      Set tagged options and tagged keys to the default
                 u      Unset an option (set to default value if global) or unbind a key
                 U      Unset tagged options and unbind tagged keys
                 C-s    Search by name
                 n      Repeat last search forwards
                 N      Repeat last search backwards
                 t      Toggle if item is tagged
                 T      Tag no items
                 C-t    Tag all items
                 f      Enter a format to filter items
                 v      Toggle option information
                 q      Exit mode

           -f specifies an initial filter: the filter is a format - if it evaluates to zero, the item in the list is not shown, otherwise it is shown.  If a filter would lead to an empty
           list,  it  is  ignored.   -F  specifies the format for each item in the tree.  -N starts without the option information.  This command works only if at least one client is at
           tached.

   display-panes [-bN] [-d duration] [-t target-client] [template]
                 (alias: displayp)
           Display a visible indicator of each pane shown by target-client.  See the display-panes-colour and display-panes-active-colour session options.  The indicator is closed when a
           key is pressed (unless -N is given) or duration milliseconds have passed.  If -d is not given, display-panes-time is used.  A duration of zero means the indicator stays  until
           a key is pressed.  While the indicator is on screen, a pane may be chosen with the 0 to 9 keys, which will cause template to be executed as a command with %% substituted
           by the pane ID.  The default template is "select-pane -t '%%'".  With -b, other commands are not blocked from running until the indicator is closed.

   find-window [-iCNrTZ] [-t target-pane] match-string
                 (alias: findw)
           Search for a fnmatch(3) pattern or, with -r, regular expression match-string in window names, titles, and visible content (but not history).  The flags control matching behav
           ior: -C matches only visible window contents, -N matches only the window name and -T matches only the window title.  -i makes the search ignore case.  The default is -CNT.  -Z
           zooms the pane.

           This command works only if at least one client is attached.

   join-pane [-bdfhv] [-l size] [-s src-pane] [-t dst-pane]
                 (alias: joinp)
           Like  split-window,  but instead of splitting dst-pane and creating a new pane, split it and move src-pane into the space.  This can be used to reverse break-pane.  The -b op
           tion causes src-pane to be joined to left of or above dst-pane.

           If -s is omitted and a marked pane is present (see select-pane -m), the marked pane is used rather than the current pane.

   kill-pane [-a] [-t target-pane]
                 (alias: killp)
           Destroy the given pane.  If no panes remain in the containing window, it is also destroyed.  The -a option kills all but the pane given with -t.

   kill-window [-a] [-t target-window]
                 (alias: killw)
           Kill the current window or the window at target-window, removing it from any sessions to which it is linked.  The -a option kills all but the window given with -t.

   last-pane [-deZ] [-t target-window]
                 (alias: lastp)
           Select the last (previously selected) pane.  -Z keeps the window zoomed if it was zoomed.  -e enables or -d disables input to the pane.

   last-window [-t target-session]
                 (alias: last)
           Select the last (previously selected) window.  If no target-session is specified, select the last window of the current session.

   link-window [-abdk] [-s src-window] [-t dst-window]
                 (alias: linkw)
           Link the window at src-window to the specified dst-window.  If dst-window is specified and no such window exists, the src-window is linked there.  With -a or -b the window  is
           moved to the next index after or before dst-window (existing windows are moved if necessary).  If -k is given and dst-window exists, it is killed, otherwise an error is gener
           ated.  If -d is given, the newly linked window is not selected.

   list-panes [-as] [-F format] [-f filter] [-t target]
                 (alias: lsp)
           If -a is given, target is ignored and all panes on the server are listed.  If -s is given, target is a session (or the current session).  If neither is given, target is a win
           dow (or the current window).  -F specifies the format of each line and -f a filter.  Only panes for which the filter is true are shown.  See the FORMATS section.

   list-windows [-a] [-F format] [-f filter] [-t target-session]
                 (alias: lsw)
           If  -a  is  given, list all windows on the server.  Otherwise, list windows in the current session or in target-session.  -F specifies the format of each line and -f a filter.
           Only windows for which the filter is true are shown.  See the FORMATS section.

   move-pane [-bdfhv] [-l size] [-s src-pane] [-t dst-pane]
                 (alias: movep)
           Does the same as join-pane.

   move-window [-abrdk] [-s src-window] [-t dst-window]
                 (alias: movew)
           This is similar to link-window, except the window at src-window is moved to dst-window.  With -r, all windows in the session are renumbered in sequential order, respecting the
           base-index option.

   new-window [-abdkPS] [-c start-directory] [-e environment] [-F format] [-n window-name] [-t target-window] [shell-command]
                 (alias: neww)
           Create a new window.  With -a or -b, the new window is inserted at the next index after or before the specified  target-window,  moving  windows  up  if  necessary;  otherwise
           target-window is the new window location.

           If  -d  is  given,  the  session  does not make the new window the current window.  target-window represents the window to be created; if the target already exists an error is
           shown, unless the -k flag is used, in which case it is destroyed.  If -S is given and a window named window-name already exists, it is selected (unless -d  is  also  given  in
           which case the command does nothing).

           shell-command  is the command to execute.  If shell-command is not specified, the value of the default-command option is used.  -c specifies the working directory in which the
           new window is created.

           When the shell command completes, the window closes.  See the remain-on-exit option to change this behaviour.

           -e takes the form VARIABLE=value and sets an environment variable for the newly created window; it may be specified multiple times.

           The TERM environment variable must be set to screen or tmux for all programs running inside tmux.  New windows will automatically have TERM=screen added to  their  envi
           ronment, but care must be taken not to reset this in shell start-up files or by the -e option.

           The  -P  option prints information about the new window after it has been created.  By default, it uses the format #{session_name}:#{window_index}’ but a different format may
           be specified with -F.

   next-layout [-t target-window]
                 (alias: nextl)
           Move a window to the next layout and rearrange the panes to fit.

   next-window [-a] [-t target-session]
                 (alias: next)
           Move to the next window in the session.  If -a is used, move to the next window with an alert.

   pipe-pane [-IOo] [-t target-pane] [shell-command]
                 (alias: pipep)
           Pipe output sent by the program in target-pane to a shell command or vice versa.  A pane may only be connected to one command at a time, any existing  pipe  is  closed  before
           shell-command  is  executed.  The shell-command string may contain the special character sequences supported by the status-left option.  If no shell-command is given, the cur
           rent pipe (if any) is closed.

           -I and -O specify which of the shell-command output streams are connected to the pane: with -I stdout is connected (so anything shell-command prints is written to the pane  as
           if it were typed); with -O stdin is connected (so any output in the pane is piped to shell-command).  Both may be used together and if neither are specified, -O is used.

           The -o option only opens a new pipe if no previous pipe exists, allowing a pipe to be toggled with a single key, for example:

                 bind-key C-p pipe-pane -o 'cat >>~/output.#I-#P'

   previous-layout [-t target-window]
                 (alias: prevl)
           Move to the previous layout in the session.

   previous-window [-a] [-t target-session]
                 (alias: prev)
           Move to the previous window in the session.  With -a, move to the previous window with an alert.

   rename-window [-t target-window] new-name
                 (alias: renamew)
           Rename the current window, or the window at target-window if specified, to new-name.

   resize-pane [-DLMRTUZ] [-t target-pane] [-x width] [-y height] [adjustment]
                 (alias: resizep)
           Resize  a pane, up, down, left or right by adjustment with -U, -D, -L or -R, or to an absolute size with -x or -y.  The adjustment is given in lines or columns (the default is
           1); -x and -y may be a given as a number of lines or columns or followed by % for a percentage of the window size (for example -x 10%).  With -Z, the active pane  is  tog
           gled between zoomed (occupying the whole of the window) and unzoomed (its normal position in the layout).

           -M begins mouse resizing (only valid if bound to a mouse key binding, see MOUSE SUPPORT).

           -T trims all lines below the current cursor position and moves lines out of the history to replace them.

   resize-window [-aADLRU] [-t target-window] [-x width] [-y height] [adjustment]
                 (alias: resizew)
           Resize  a window, up, down, left or right by adjustment with -U, -D, -L or -R, or to an absolute size with -x or -y.  The adjustment is given in lines or cells (the default is
           1).  -A sets the size of the largest session containing the window; -a the size of the smallest.  This command will automatically set window-size to manual in the  window  op
           tions.

   respawn-pane [-k] [-c start-directory] [-e environment] [-t target-pane] [shell-command]
                 (alias: respawnp)
           Reactivate  a  pane  in which the command has exited (see the remain-on-exit window option).  If shell-command is not given, the command used when the pane was created or last
           respawned is executed.  The pane must be already inactive, unless -k is given, in which case any existing command is killed.  -c specifies a  new  working  directory  for  the
           pane.  The -e option has the same meaning as for the new-window command.

   respawn-window [-k] [-c start-directory] [-e environment] [-t target-window] [shell-command]
                 (alias: respawnw)
           Reactivate  a  window  in  which the command has exited (see the remain-on-exit window option).  If shell-command is not given, the command used when the window was created or
           last respawned is executed.  The window must be already inactive, unless -k is given, in which case any existing command is killed.  -c specifies a new working  directory  for
           the window.  The -e option has the same meaning as for the new-window command.

   rotate-window [-DUZ] [-t target-window]
                 (alias: rotatew)
           Rotate the positions of the panes within a window, either upward (numerically lower) with -U or downward (numerically higher).  -Z keeps the window zoomed if it was zoomed.

   select-layout [-Enop] [-t target-pane] [layout-name]
                 (alias: selectl)
           Choose  a  specific  layout  for  a  window.   If layout-name is not given, the last preset layout used (if any) is reapplied.  -n and -p are equivalent to the next-layout and
           previous-layout commands.  -o applies the last set layout if possible (undoes the most recent layout change).  -E spreads the current pane and any panes next to it out evenly.

   select-pane [-DdeLlMmRUZ] [-T title] [-t target-pane]
                 (alias: selectp)
           Make pane target-pane the active pane in its window.  If one of -D, -L, -R, or -U is used, respectively the pane below, to the left, to the right, or above the target pane  is
           used.  -Z keeps the window zoomed if it was zoomed.  -l is the same as using the last-pane command.  -e enables or -d disables input to the pane.  -T sets the pane title.

           -m and -M are used to set and clear the marked pane.  There is one marked pane at a time, setting a new marked pane clears the last.  The marked pane is the default target for
           -s to join-pane, move-pane, swap-pane and swap-window.

   select-window [-lnpT] [-t target-window]
                 (alias: selectw)
           Select  the window at target-window.  -l, -n and -p are equivalent to the last-window, next-window and previous-window commands.  If -T is given and the selected window is al
           ready the current window, the command behaves like last-window.

   split-window [-bdfhIvPZ] [-c start-directory] [-e environment] [-l size] [-t target-pane] [shell-command] [-F format]
                 (alias: splitw)
           Create a new pane by splitting target-pane: -h does a horizontal split and -v a vertical split; if neither is specified, -v is assumed.  The -l option specifies  the  size  of
           the  new  pane  in  lines (for vertical split) or in columns (for horizontal split); size may be followed by % to specify a percentage of the available space.  The -b option
           causes the new pane to be created to the left of or above target-pane.  The -f option creates a new pane spanning the full window height (with -h) or full window  width  (with
           -v), instead of splitting the active pane.  -Z zooms if the window is not zoomed, or keeps it zoomed if already zoomed.

           An  empty  shell-command  ('')  will  create  a  pane  with  no  command  running  in it.  Output can be sent to such a pane with the display-message command.  The -I flag (if
           shell-command is not specified or empty) will create an empty pane and forward any output from stdin to it.  For example:

                 $ make 2>&1|tmux splitw -dI &

           All other options have the same meaning as for the new-window command.

   swap-pane [-dDUZ] [-s src-pane] [-t dst-pane]
                 (alias: swapp)
           Swap two panes.  If -U is used and no source pane is specified with -s, dst-pane is swapped with the previous pane (before it numerically); -D swaps with the next pane  (after
           it numerically).  -d instructs tmux not to change the active pane and -Z keeps the window zoomed if it was zoomed.

           If -s is omitted and a marked pane is present (see select-pane -m), the marked pane is used rather than the current pane.

   swap-window [-d] [-s src-window] [-t dst-window]
                 (alias: swapw)
           This  is similar to link-window, except the source and destination windows are swapped.  It is an error if no window exists at src-window.  If -d is given, the new window does
           not become the current window.

           If -s is omitted and a marked pane is present (see select-pane -m), the window containing the marked pane is used rather than the current window.

   unlink-window [-k] [-t target-window]
                 (alias: unlinkw)
           Unlink target-window.  Unless -k is given, a window may be unlinked only if it is linked to multiple sessions - windows may not be linked to no sessions; if  -k  is  specified
           and the window is linked to only one session, it is unlinked and destroyed.

KEY BINDINGS

   tmux  allows  a  command  to be bound to most keys, with or without a prefix key.  When specifying keys, most represent themselves (for example A to Z).  Ctrl keys may be prefixed
   with C- or ^, Shift keys with S- and Alt (meta) with M-.  In addition, the following special key names are accepted: Up, Down, Left, Right, BSpace,  BTab,  DC  (Delete),  End,
   Enter,  Escape,  F1 to F12, Home, IC (Insert), NPage/PageDown/PgDn, PPage/PageUp/PgUp, Space, and Tab.  Note that to bind the "’ or ‘'’ keys, quotation marks are necessary, for exam‐
   ple:

         bind-key '"' split-window
         bind-key "'" new-window

   A command bound to the Any key will execute for all keys which do not have a more specific binding.

   Commands related to key bindings are as follows:

   bind-key [-nr] [-N note] [-T key-table] key command [argument ...]
                 (alias: bind)
           Bind key key to command.  Keys are bound in a key table.  By default (without -T), the key is bound in the prefix key table.  This table is used for  keys  pressed  after  the
           prefix key (for example, by default c is bound to new-window in the prefix table, so C-b c creates a new window).  The root table is used for keys pressed without the pre
           fix key: binding c to new-window in the root table (not recommended) means a plain c will create a new window.  -n is an alias for -T root.  Keys may also be bound in cus
           tom key tables and the switch-client -T command used to switch to them from a key binding.  The -r flag indicates this key may repeat, see the repeat-time option.  -N attaches
           a note to the key (shown with list-keys -N).

           To view the default bindings and possible commands, see the list-keys command.

   list-keys [-1aN] [-P prefix-string -T key-table] [key]
                 (alias: lsk)
           List key bindings.  There are two forms: the default lists keys as bind-key commands; -N lists only keys with attached notes and shows only the key and note for each key.

           With the default form, all key tables are listed by default.  -T lists only keys in key-table.

           With  the -N form, only keys in the root and prefix key tables are listed by default; -T also lists only keys in key-table.  -P specifies a prefix to print before each key and
           -1 lists only the first matching key.  -a lists the command for keys that do not have a note rather than skipping them.

   send-keys [-FHKlMRX] [-c target-client] [-N repeat-count] [-t target-pane] key ...
                 (alias: send)
           Send a key or keys to a window or client.  Each argument key is the name of the key (such as C-a or NPage) to send; if the string is not recognised as a key, it is sent as
           a series of characters.  If -K is given, keys are sent to target-client, so they are looked up in the client's key table, rather than to target-pane.  All arguments  are  sent
           sequentially from first to last.  If no keys are given and the command is bound to a key, then that key is used.

           The -l flag disables key name lookup and processes the keys as literal UTF-8 characters.  The -H flag expects each key to be a hexadecimal number for an ASCII character.

           The -R flag causes the terminal state to be reset.

           -M passes through a mouse event (only valid if bound to a mouse key binding, see MOUSE SUPPORT).

           -X is used to send a command into copy mode - see the WINDOWS AND PANES section.  -N specifies a repeat count and -F expands formats in arguments where appropriate.

   send-prefix [-2] [-t target-pane]
           Send the prefix key, or with -2 the secondary prefix key, to a window as if it was pressed.

   unbind-key [-anq] [-T key-table] key
                 (alias: unbind)
           Unbind the command bound to key.  -n and -T are the same as for bind-key.  If -a is present, all key bindings are removed.  The -q option prevents errors being returned.

OPTIONS

   The  appearance  and  behaviour of tmux may be modified by changing the value of various options.  There are four types of option: server options, session options, window options, and
   pane options.

   The tmux server has a set of global server options which do not apply to any particular window or session or pane.  These are altered with the set-option -s command, or displayed with
   the show-options -s command.

   In addition, each individual session may have a set of session options, and there is a separate set of global session options.  Sessions which do not have a particular option  config
   ured  inherit  the value from the global session options.  Session options are set or unset with the set-option command and may be listed with the show-options command.  The available
   server and session options are listed under the set-option command.

   Similarly, a set of window options is attached to each window and a set of pane options to each pane.  Pane options inherit from window options.  This means any pane option may be set
   as a window option to apply the option to all panes in the window without the option set, for example these commands will set the background colour to red for all panes except pane 0:

         set -w window-style bg=red
         set -pt:.0 window-style bg=blue

   There is also a set of global window options from which any unset window or pane options are inherited.  Window and pane options are altered with set-option -w  and  -p  commands  and
   displayed with show-option -w and -p.

   tmux also supports user options which are prefixed with a @.  User options may have any name, so long as they are prefixed with @, and be set to any string.  For example:

         $ tmux set -wq @foo "abc123"
         $ tmux show -wv @foo
         abc123

   Commands which set options are as follows:

   set-option [-aFgopqsuUw] [-t target-pane] option value
                 (alias: set)
           Set  a  pane  option  with -p, a window option with -w, a server option with -s, otherwise a session option.  If the option is not a user option, -w or -s may be unnecessary -
           tmux will infer the type from the option name, assuming -w for pane options.  If -g is given, the global session or window option is set.

           -F expands formats in the option value.  The -u flag unsets an option, so a session inherits the option from the global options (or with -g, restores a global  option  to  the
           default).   -U  unsets an option (like -u) but if the option is a pane option also unsets the option on any panes in the window.  value depends on the option and may be a num
           ber, a string, or a flag (on, off, or omitted to toggle).

           The -o flag prevents setting an option that is already set and the -q flag suppresses errors about unknown or ambiguous options.

           With -a, and if the option expects a string or a style, value is appended to the existing setting.  For example:

                 set -g status-left "foo"
                 set -ag status-left "bar"

           Will result in foobar.  And:

                 set -g status-style "bg=red"
                 set -ag status-style "fg=blue"

           Will result in a red background and blue foreground.  Without -a, the result would be the default background and a blue foreground.

   show-options [-AgHpqsvw] [-t target-pane] [option]
                 (alias: show)
           Show the pane options (or a single option if option is provided) with -p, the window options with -w, the server options with -s, otherwise the session options.  If the option
           is not a user option, -w or -s may be unnecessary - tmux will infer the type from the option name, assuming -w for pane options.  Global session or window options  are  listed
           if  -g  is  used.   -v shows only the option value, not the name.  If -q is set, no error will be returned if option is unset.  -H includes hooks (omitted by default).  -A in
           cludes options inherited from a parent set of options, such options are marked with an asterisk.

   Available server options are:

   backspace key
           Set the key sent by tmux for backspace.

   buffer-limit number
           Set the number of buffers; as new buffers are added to the top of the stack, old ones are removed from the bottom if necessary to maintain this maximum length.

   command-alias[] name=value
           This is an array of custom aliases for commands.  If an unknown command matches name, it is replaced with value.  For example, after:

                 set -s command-alias[100] zoom='resize-pane -Z'

           Using:

                 zoom -t:.1

           Is equivalent to:

                 resize-pane -Z -t:.1

           Note that aliases are expanded when a command is parsed rather than when it is executed, so binding an alias with bind-key will bind the expanded form.

   copy-command shell-command
           Give the command to pipe to if the copy-pipe copy mode command is used without arguments.

   default-terminal terminal
           Set the default terminal for new windows created in this session - the default value of the TERM environment variable.  For tmux  to  work  correctly,  this  must  be  set  to
           screen, tmux or a derivative of them.

   escape-time time
           Set the time in milliseconds for which tmux waits after an escape is input to determine if it is part of a function or meta key sequences.

   editor shell-command
           Set the command used when tmux runs an editor.

   exit-empty [on | off]
           If enabled (the default), the server will exit when there are no active sessions.

   exit-unattached [on | off]
           If enabled, the server will exit when there are no attached clients.

   extended-keys [on | off | always]
           Controls how modified keys (keys pressed together with Control, Meta, or Shift) are reported.  This is the equivalent of the modifyOtherKeys xterm(1) resource.

           When  set to on, the program inside the pane can request one of two modes: mode 1 which changes the sequence for only keys which lack an existing well-known representation; or
           mode 2 which changes the sequence for all keys.  When set to always, modes 1 and 2 can still be requested by applications, but mode 1 will be forced instead  of  the  standard
           mode.  When set to off, this feature is disabled and only standard keys are reported.

           tmux  will  always  request extended keys itself if the terminal supports them.  See also the extkeys feature for the terminal-features option, the extended-keys-format option
           and the pane_key_mode variable.

   extended-keys-format [csi-u | xterm]
           Selects one of the two possible formats for reporting modified keys to applications.  This is the equivalent of the formatOtherKeys xterm(1) resource.  For example, C-S-a will
           be reported as ^[[27;6;65~ when set to xterm, and as ^[[65;6u when set to csi-u.

   focus-events [on | off]
           When enabled, focus events are requested from the terminal if supported and passed through to applications running in tmux.  Attached clients should be detached  and  attached
           again after changing this option.

   history-file path
           If not empty, a file to which tmux will write command prompt history on exit and load it from on start.

   message-limit number
           Set the number of error or information messages to save in the message log for each client.

   prompt-history-limit number
           Set the number of history items to save in the history file for each type of command prompt.

   set-clipboard [on | external | off]
           Attempt  to  set  the terminal clipboard content using the xterm(1) escape sequence, if there is an Ms entry in the terminfo(5) description (see the TERMINFO EXTENSIONS sec
           tion).

           If set to on, tmux will both accept the escape sequence to create a buffer and attempt to set the terminal clipboard.  If set to external, tmux will attempt to set the  termi
           nal clipboard but ignore attempts by applications to set tmux buffers.  If off, tmux will neither accept the clipboard escape sequence nor attempt to set the clipboard.

           Note that this feature needs to be enabled in xterm(1) by setting the resource:

                 disallowedWindowOps: 20,21,SetXprop

           Or changing this property from the xterm(1) interactive menu when required.

   terminal-features[] string
           Set  terminal  features  for terminal types read from terminfo(5).  tmux has a set of named terminal features.  Each will apply appropriate changes to the terminfo(5) entry in
           use.

           tmux can detect features for a few common terminals;  this  option  can  be  used  to  easily  tell  tmux  about  features  supported  by  terminals  it  cannot  detect.   The
           terminal-overrides  option allows individual terminfo(5) capabilities to be set instead, terminal-features is intended for classes of functionality supported in a standard way
           but not reported by terminfo(5).  Care must be taken to configure this only with features the terminal actually supports.

           This is an array option where each entry is a colon-separated string made up of a terminal type pattern (matched using fnmatch(3)) followed by a  list  of  terminal  features.
           The available features are:

           256     Supports 256 colours with the SGR escape sequences.

           clipboard
                   Allows setting the system clipboard.

           ccolour
                   Allows setting the cursor colour.

           cstyle  Allows setting the cursor style.

           extkeys
                   Supports extended keys.

           focus   Supports focus reporting.

           hyperlinks
                   Supports OSC 8 hyperlinks.

           ignorefkeys
                   Ignore function keys from terminfo(5) and use the tmux internal set only.

           margins
                   Supports DECSLRM margins.

           mouse   Supports xterm(1) mouse sequences.

           osc7    Supports the OSC 7 working directory extension.

           overline
                   Supports the overline SGR attribute.

           rectfill
                   Supports the DECFRA rectangle fill escape sequence.

           RGB     Supports RGB colour with the SGR escape sequences.

           sixel   Supports SIXEL graphics.

           strikethrough
                   Supports the strikethrough SGR escape sequence.

           sync    Supports synchronized updates.

           title   Supports xterm(1) title setting.

           usstyle
                   Allows underscore style and colour to be set.

   terminal-overrides[] string
           Allow  terminal descriptions read using terminfo(5) to be overridden.  Each entry is a colon-separated string made up of a terminal type pattern (matched using fnmatch(3)) and
           a set of name=value entries.

           For example, to set the clear terminfo(5) entry to \e[H\e[2J for all terminal types matching rxvt*:

                 rxvt*:clear=\e[H\e[2J

           The terminal entry value is passed through strunvis(3) before interpretation.

   user-keys[] key
           Set list of user-defined key escape sequences.  Each item is associated with a key named User0, User1, and so on.

           For example:

                 set -s user-keys[0] "\e[5;30012~"
                 bind User0 resize-pane -L 3

   Available session options are:

   activity-action [any | none | current | other]
           Set action on window activity when monitor-activity is on.  any means activity in any window linked to a session causes a bell or message (depending on visual-activity) in the
           current window of that session, none means all activity is ignored (equivalent to monitor-activity being off), current means only activity in windows other  than  the  current
           window are ignored and other means activity in the current window is ignored but not those in other windows.

   assume-paste-time milliseconds
           If  keys  are entered faster than one in milliseconds, they are assumed to have been pasted rather than typed and tmux key bindings are not processed.  The default is one mil
           lisecond and zero disables.

   base-index index
           Set the base index from which an unused index should be searched when a new window is created.  The default is zero.

   bell-action [any | none | current | other]
           Set action on a bell in a window when monitor-bell is on.  The values are the same as those for activity-action.

   default-command shell-command
           Set the command used for new windows (if not specified when the window is created) to shell-command, which may be any sh(1) command.  The default is an empty string, which in
           structs tmux to create a login shell using the value of the default-shell option.

   default-shell path
           Specify the default shell.  This is used as the login shell for new windows when the default-command option is set to empty, and must be the full path of the executable.  When
           started tmux tries to set a default value from the first suitable of the SHELL environment variable, the shell returned by getpwuid(3), or /bin/sh.  This option should be con
           figured when tmux is used as a login shell.

   default-size XxY
           Set the default size of new windows when the window-size option is set to manual or when a session is created with new-session -d.  The value is the width and height separated
           by an x character.  The default is 80x24.

   destroy-unattached [off | on | keep-last | keep-group]
           If on, destroy the session after the last client has detached.  If off (the default), leave the session orphaned.  If keep-last, destroy the session only if it is in  a  group
           and has other sessions in that group.  If keep-group, destroy the session unless it is in a group and is the only session in that group.

   detach-on-destroy [off | on | no-detached | previous | next]
           If  on (the default), the client is detached when the session it is attached to is destroyed.  If off, the client is switched to the most recently active of the remaining ses
           sions.  If no-detached, the client is detached only if there are no detached sessions; if detached sessions exist, the client is switched to  the  most  recently  active.   If
           previous or next, the client is switched to the previous or next session in alphabetical order.

   display-panes-active-colour colour
           Set the colour used by the display-panes command to show the indicator for the active pane.

   display-panes-colour colour
           Set the colour used by the display-panes command to show the indicators for inactive panes.

   display-panes-time time
           Set the time in milliseconds for which the indicators shown by the display-panes command appear.

   display-time time
           Set the amount of time for which status line messages and other on-screen indicators are displayed.  If set to 0, messages and indicators are displayed until a key is pressed.
           time is in milliseconds.

   history-limit lines
           Set the maximum number of lines held in window history.  This setting applies only to new windows - existing window histories are not resized and retain the limit at the point
           they were created.

   key-table key-table
           Set the default key table to key-table instead of root.

   lock-after-time number
           Lock the session (like the lock-session command) after number seconds of inactivity.  The default is not to lock (set to 0).

   lock-command shell-command
           Command to run when locking each client.  The default is to run lock(1) with -np.

   menu-style style
           Set the menu style.  See the STYLES section on how to specify style.  Attributes are ignored.

   menu-selected-style style
           Set the selected menu item style.  See the STYLES section on how to specify style.  Attributes are ignored.

   menu-border-style style
           Set the menu border style.  See the STYLES section on how to specify style.  Attributes are ignored.

   menu-border-lines type
           Set the type of characters used for drawing menu borders.  See popup-border-lines for possible values for border-lines.

   message-command-style style
           Set status line message command style.  This is used for the command prompt with vi(1) keys when in command mode.  For how to specify style, see the STYLES section.

   message-line [0 | 1 | 2 | 3 | 4]
           Set line on which status line messages and the command prompt are shown.

   message-style style
           Set status line message style.  This is used for messages and for the command prompt.  For how to specify style, see the STYLES section.

   mouse [on | off]
           If on, tmux captures the mouse and allows mouse events to be bound as key bindings.  See the MOUSE SUPPORT section for details.

   prefix key
           Set the key accepted as a prefix key.  In addition to the standard keys described under KEY BINDINGS, prefix can be set to the special key None to set no prefix.

   prefix2 key
           Set a secondary key accepted as a prefix key.  Like prefix, prefix2 can be set to None.

   prefix-timeout time
           Set the time in milliseconds for which tmux waits after prefix is input before dismissing it.  Can be set to zero to disable any timeout.

   renumber-windows [on | off]
           If  on, when a window is closed in a session, automatically renumber the other windows in numerical order.  This respects the base-index option if it has been set.  If off, do
           not renumber the windows.

   repeat-time time
           Allow multiple commands to be entered without pressing the prefix-key again in the specified time milliseconds (the default is 500).  Whether a key repeats may be set when  it
           is bound using the -r flag to bind-key.  Repeat is enabled for the default keys bound to the resize-pane command.

   set-titles [on | off]
           Attempt  to  set the client terminal title using the tsl and fsl terminfo(5) entries if they exist.  tmux automatically sets these to the \e]0;...\007 sequence if the terminal
           appears to be xterm(1).  This option is off by default.

   set-titles-string string
           String used to set the client terminal title if set-titles is on.  Formats are expanded, see the FORMATS section.

   silence-action [any | none | current | other]
           Set action on window silence when monitor-silence is on.  The values are the same as those for activity-action.

   status [off | on | 2 | 3 | 4 | 5]
           Show or hide the status line or specify its size.  Using on gives a status line one row in height; 2, 3, 4 or 5 more rows.

   status-format[] format
           Specify the format to be used for each line of the status line.  The default builds the top status line from the various individual status options below.

   status-interval interval
           Update the status line every interval seconds.  By default, updates will occur every 15 seconds.  A setting of zero disables redrawing at interval.

   status-justify [left | centre | right | absolute-centre]
           Set the position of the window list in the status line: left, centre or right.  centre puts the window list in the relative centre of the available free space; absolute-centre
           uses the centre of the entire horizontal space.

   status-keys [vi | emacs]
           Use vi or emacs-style key bindings in the status line, for example at the command prompt.  The default is emacs, unless the VISUAL or EDITOR environment variables are set  and
           contain the string vi.

   status-left string
           Display string (by default the session name) to the left of the status line.  string will be passed through strftime(3).  Also see the FORMATS and STYLES sections.

           For details on how the names and titles can be set see the NAMES AND TITLES section.

           Examples are:

                 #(sysctl vm.loadavg)
                 #[fg=yellow,bold]#(apm -l)%%#[default] [#S]

           The default is [#S] ’.

   status-left-length length
           Set the maximum length of the left component of the status line.  The default is 10.

   status-left-style style
           Set the style of the left part of the status line.  For how to specify style, see the STYLES section.

   status-position [top | bottom]
           Set the position of the status line.

   status-right string
           Display  string  to  the  right of the status line.  By default, the current pane title in double quotes, the date and the time are shown.  As with status-left, string will be
           passed to strftime(3) and character pairs are replaced.

   status-right-length length
           Set the maximum length of the right component of the status line.  The default is 40.

   status-right-style style
           Set the style of the right part of the status line.  For how to specify style, see the STYLES section.

   status-style style
           Set status line style.  For how to specify style, see the STYLES section.

   update-environment[] variable
           Set list of environment variables to be copied into the session environment when a new session is created or an existing session is attached.  Any variables that do not  exist
           in the source environment are set to be removed from the session environment (as if -r was given to the set-environment command).

   visual-activity [on | off | both]
           If on, display a message instead of sending a bell when activity occurs in a window for which the monitor-activity window option is enabled.  If set to both, a bell and a mes
           sage are produced.

   visual-bell [on | off | both]
           If  on, a message is shown on a bell in a window for which the monitor-bell window option is enabled instead of it being passed through to the terminal (which normally makes a
           sound).  If set to both, a bell and a message are produced.  Also see the bell-action option.

   visual-silence [on | off | both]
           If monitor-silence is enabled, prints a message after the interval has expired on a given window instead of sending a bell.  If set to both, a bell and a message are produced.

   word-separators string
           Sets the session's conception of what characters are considered word separators, for the purposes of the next and previous word commands in copy mode.

   Available window options are:

   aggressive-resize [on | off]
           Aggressively resize the chosen window.  This means that tmux will resize the window to the size of the smallest or largest session (see the window-size option) for which it is
           the current window, rather than the session to which it is attached.  The window may resize when the current window is changed on another session;  this  option  is  good  for
           full-screen programs which support SIGWINCH and poor for interactive programs such as shells.

   automatic-rename [on | off]
           Control  automatic  window renaming.  When this setting is enabled, tmux will rename the window automatically using the format specified by automatic-rename-format.  This flag
           is automatically disabled for an individual window when a name is specified at creation with new-window or new-session, or later with rename-window, or with a terminal  escape
           sequence.  It may be switched off globally with:

                 set-option -wg automatic-rename off

   automatic-rename-format format
           The format (see FORMATS) used when the automatic-rename option is enabled.

   clock-mode-colour colour
           Set clock colour.

   clock-mode-style [12 | 24]
           Set clock hour format.

   fill-character character
           Set the character used to fill areas of the terminal unused by a window.

   main-pane-height height
   main-pane-width width
           Set the width or height of the main (left or top) pane in the main-horizontal, main-horizontal-mirrored, main-vertical, or main-vertical-mirrored layouts.  If suffixed by %,
           this is a percentage of the window size.

   copy-mode-match-style style
           Set the style of search matches in copy mode.  For how to specify style, see the STYLES section.

   copy-mode-mark-style style
           Set the style of the line containing the mark in copy mode.  For how to specify style, see the STYLES section.

   copy-mode-current-match-style style
           Set the style of the current search match in copy mode.  For how to specify style, see the STYLES section.

   mode-keys [vi | emacs]
           Use vi or emacs-style key bindings in copy mode.  The default is emacs, unless VISUAL or EDITOR contains vi.

   mode-style style
           Set window modes style.  For how to specify style, see the STYLES section.

   monitor-activity [on | off]
           Monitor for activity in the window.  Windows with activity are highlighted in the status line.

   monitor-bell [on | off]
           Monitor for a bell in the window.  Windows with a bell are highlighted in the status line.

   monitor-silence [interval]
           Monitor  for  silence  (no activity) in the window within interval seconds.  Windows that have been silent for the interval are highlighted in the status line.  An interval of
           zero disables the monitoring.

   other-pane-height height
           Set the height of the other panes (not the main pane) in the main-horizontal and main-horizontal-mirrored layouts.  If this option is set to 0 (the default), it will  have  no
           effect.  If both the main-pane-height and other-pane-height options are set, the main pane will grow taller to make the other panes the specified height, but will never shrink
           to do so.  If suffixed by %, this is a percentage of the window size.

   other-pane-width width
           Like other-pane-height, but set the width of other panes in the main-vertical and main-vertical-mirrored layouts.

   pane-active-border-style style
           Set the pane border style for the currently active pane.  For how to specify style, see the STYLES section.  Attributes are ignored.

   pane-base-index index
           Like base-index, but set the starting index for pane numbers.

   pane-border-format format
           Set the text shown in pane border status lines.

   pane-border-indicators [off | colour | arrows | both]
           Indicate active pane by colouring only half of the border in windows with exactly two panes, by displaying arrow markers, by drawing both or neither.

   pane-border-lines type
           Set the type of characters used for drawing pane borders.  type may be one of:

           single  single lines using ACS or UTF-8 characters

           double  double lines using UTF-8 characters

           heavy   heavy lines using UTF-8 characters

           simple  simple ASCII characters

           number  the pane number

           double and heavy will fall back to standard ACS line drawing when UTF-8 is not supported.

   pane-border-status [off | top | bottom]
           Turn pane border status lines off or set their position.

   pane-border-style style
           Set the pane border style for panes aside from the active pane.  For how to specify style, see the STYLES section.  Attributes are ignored.

   popup-style style
           Set the popup style.  See the STYLES section on how to specify style.  Attributes are ignored.

   popup-border-style style
           Set the popup border style.  See the STYLES section on how to specify style.  Attributes are ignored.

   popup-border-lines type
           Set the type of characters used for drawing popup borders.  type may be one of:

           single  single lines using ACS or UTF-8 characters (default)

           rounded
                   variation of single with rounded corners using UTF-8 characters

           double  double lines using UTF-8 characters

           heavy   heavy lines using UTF-8 characters

           simple  simple ASCII characters

           padded  simple ASCII space character

           none    no border

           double and heavy will fall back to standard ACS line drawing when UTF-8 is not supported.

   window-status-activity-style style
           Set status line style for windows with an activity alert.  For how to specify style, see the STYLES section.

   window-status-bell-style style
           Set status line style for windows with a bell alert.  For how to specify style, see the STYLES section.

   window-status-current-format string
           Like window-status-format, but is the format used when the window is the current window.

   window-status-current-style style
           Set status line style for the currently active window.  For how to specify style, see the STYLES section.

   window-status-format string
           Set the format in which the window is displayed in the status line window list.  See the FORMATS and STYLES sections.

   window-status-last-style style
           Set status line style for the last active window.  For how to specify style, see the STYLES section.

   window-status-separator string
           Sets the separator drawn between windows in the status line.  The default is a single space character.

   window-status-style style
           Set status line style for a single window.  For how to specify style, see the STYLES section.

   window-size largest | smallest | manual | latest
           Configure  how  tmux  determines  the window size.  If set to largest, the size of the largest attached session is used; if smallest, the size of the smallest.  If manual, the
           size of a new window is set from the default-size option and windows are resized automatically.  With latest, tmux uses the size of the client that had the most recent  activ
           ity.  See also the resize-window command and the aggressive-resize option.

   wrap-search [on | off]
           If this option is set, searches will wrap around the end of the pane contents.  The default is on.

   Available pane options are:

   allow-passthrough [on | off | all]
           Allow programs in the pane to bypass tmux using a terminal escape sequence (\ePtmux;...\e\\).  If set to on, passthrough sequences will be allowed only if the pane is visible.
           If set to all, they will be allowed even if the pane is invisible.

   allow-rename [on | off]
           Allow programs in the pane to change the window name using a terminal escape sequence (\ek...\e\\).

   allow-set-title [on | off]
           Allow programs in the pane to change the title using the terminal escape sequences (\e]2;...\e\\ or \e]0;...\e\\).

   alternate-screen [on | off]
           This  option configures whether programs running inside the pane may use the terminal alternate screen feature, which allows the smcup and rmcup terminfo(5) capabilities.  The
           alternate screen feature preserves the contents of the window when an interactive application starts and restores it on exit, so that any output visible before the application
           starts reappears unchanged after it exits.

   cursor-colour colour
           Set the colour of the cursor.

   pane-colours[] colour
           The default colour palette.  Each entry in the array defines the colour tmux uses when the colour with that index is requested.  The index may be from zero to 255.

   cursor-style style
           Set the style of the cursor.  Available styles are: default, blinking-block, block, blinking-underline, underline, blinking-bar, bar.

   remain-on-exit [on | off | failed]
           A pane with this flag set is not destroyed when the program running in it exits.  If set to failed, then only when the program exit status is not zero.  The pane may be  reac
           tivated with the respawn-pane command.

   remain-on-exit-format string
           Set the text shown at the bottom of exited panes when remain-on-exit is enabled.

   scroll-on-clear [on | off]
           When the entire screen is cleared and this option is on, scroll the contents of the screen into history before clearing it.

   synchronize-panes [on | off]
           Duplicate input to all other panes in the same window where this option is also on (only for panes that are not in any mode).

   window-active-style style
           Set the pane style when it is the active pane.  For how to specify style, see the STYLES section.

   window-style style
           Set the pane style.  For how to specify style, see the STYLES section.

HOOKS

   tmux allows commands to run on various triggers, called hooks.  Most tmux commands have an after hook and there are a number of hooks not associated with commands.

   Hooks are stored as array options, members of the array are executed in order when the hook is triggered.  Like options different hooks may be global or belong to a session, window or
   pane.  Hooks may be configured with the set-hook or set-option commands and displayed with show-hooks or show-options -H.  The following two commands are equivalent:

          set-hook -g pane-mode-changed[42] 'set -g status-left-style bg=red'
          set-option -g pane-mode-changed[42] 'set -g status-left-style bg=red'

   Setting a hook without specifying an array index clears the hook and sets the first member of the array.

   A command's after hook is run after it completes, except when the command is run as part of a hook itself.  They are named with an ‘after-’ prefix.  For example, the following command
   adds a hook to select the even-vertical layout after every split-window:

         set-hook -g after-split-window "selectl even-vertical"

   If a command fails, the ‘command-error’ hook will be fired.  For example, this could be used to write to a log file:

         set-hook -g command-error "run-shell \"echo 'a tmux command failed' >>/tmp/log\""

   All the notifications listed in the “CONTROL MODE” section are hooks (without any arguments), except %exit.  The following additional hooks are available:

   alert-activity          Run when a window has activity.  See monitor-activity.

   alert-bell              Run when a window has received a bell.  See monitor-bell.

   alert-silence           Run when a window has been silent.  See monitor-silence.

   client-active           Run when a client becomes the latest active client of its session.

   client-attached         Run when a client is attached.

   client-detached         Run when a client is detached

   client-focus-in         Run when focus enters a client

   client-focus-out        Run when focus exits a client

   client-resized          Run when a client is resized.

   client-session-changed  Run when a client's attached session is changed.

   command-error           Run when a command fails.

   pane-died               Run when the program running in a pane exits, but remain-on-exit is on so the pane has not closed.

   pane-exited             Run when the program running in a pane exits.

   pane-focus-in           Run when the focus enters a pane, if the focus-events option is on.

   pane-focus-out          Run when the focus exits a pane, if the focus-events option is on.

   pane-set-clipboard      Run when the terminal clipboard is set using the xterm(1) escape sequence.

   session-created         Run when a new session created.

   session-closed          Run when a session closed.

   session-renamed         Run when a session is renamed.

   window-linked           Run when a window is linked into a session.

   window-renamed          Run when a window is renamed.

   window-resized          Run when a window is resized.  This may be after the client-resized hook is run.

   window-unlinked         Run when a window is unlinked from a session.

   Hooks are managed with these commands:

   set-hook [-agpRuw] [-t target-pane] hook-name command
           Without -R, sets (or with -u unsets) hook hook-name to command.  The flags are the same as for set-option.

           With -R, run hook-name immediately.

   show-hooks [-gpw] [-t target-pane]
           Shows hooks.  The flags are the same as for show-options.

MOUSE SUPPORT

   If  the  mouse  option  is on (the default is off), tmux allows mouse events to be bound as keys.  The name of each key is made up of a mouse event (such as MouseUp1) and a location
   suffix, one of the following:

         Pane             the contents of a pane
         Border           a pane border
         Status           the status line window list
         StatusLeft       the left part of the status line
         StatusRight      the right part of the status line
         StatusDefault    any other part of the status line

   The following mouse events are available:

         WheelUp       WheelDown
         MouseDown1    MouseUp1      MouseDrag1   MouseDragEnd1
         MouseDown2    MouseUp2      MouseDrag2   MouseDragEnd2
         MouseDown3    MouseUp3      MouseDrag3   MouseDragEnd3
         SecondClick1  SecondClick2  SecondClick3
         DoubleClick1  DoubleClick2  DoubleClick3
         TripleClick1  TripleClick2  TripleClick3

   The SecondClick events are fired for the second click of a double click, even if there may be a third click which will fire TripleClick instead of DoubleClick.

   Each should be suffixed with a location, for example MouseDown1Status.

   The special token {mouse} or = may be used as target-window or target-pane in commands bound to mouse key bindings.  It resolves to the window or pane over which the  mouse  event
   took  place  (for  example,  the  window  in  the  status  line  over  which  button 1 was released for a MouseUp1Status binding, or the pane over which the wheel was scrolled for a
   WheelDownPane binding).

   The send-keys -M flag may be used to forward a mouse event to a pane.

   The default key bindings allow the mouse to be used to select and resize panes, to copy text and to change window using the status line.  These take effect  if  the  mouse  option  is
   turned on.

FORMATS

   Certain  commands accept the -F flag with a format argument.  This is a string which controls the output format of the command.  Format variables are enclosed in #{’ and ‘}’, for ex‐
   ample #{session_name}’.  The possible variables are listed in the table below, or the name of a tmux option may be used for an option's value.  Some variables have  a  shorter  alias
   such as #S’; ‘##’ is replaced by a single ‘#’, ‘#,’ by a ‘,’ and ‘#}’ by a ‘}’.

   Conditionals  are available by prefixing with ?’ and separating two alternatives with a comma; if the specified variable exists and is not zero, the first alternative is chosen, oth
   erwise the second is used.  For example #{?session_attached,attached,not attached}’ will include the string ‘attached’ if the session is attached and the string ‘not attached’ if  it
   is  unattached, or #{?automatic-rename,yes,no}’ will include ‘yes’ if automatic-rename is enabled, or ‘no’ if not.  Conditionals can be nested arbitrarily.  Inside a conditional, ‘,’
   and } must be escaped as #,’ and ‘#}’, unless they are part of a ‘#{...}’ replacement.  For example:

         #{?pane_in_mode,#[fg=white#,bg=red],#[fg=red#,bg=white]}#W .

   String comparisons may be expressed by prefixing two comma-separated alternatives by ==, !=, <, >, <= or >= and a colon.  For example #{==:#{host},myhost}’  will  be  re‐
   placed  by  1  if  running  on  myhost,  otherwise  by  0.   ||  and  &&  evaluate  to  true  if  either  or  both  of two comma-separated alternatives are true, for example
   #{||:#{pane_in_mode},#{alternate_on}}’.

   An m specifies an fnmatch(3) or regular expression comparison.  The first argument is the pattern and the second the string to compare.  An optional argument  specifies  flags:  r
   means  the  pattern  is  a regular expression instead of the default fnmatch(3) pattern, and i means to ignore case.  For example: #{m:*foo*,#{host}}’ or ‘#{m/ri:^A,MYVAR}’.  A ‘C’
   performs a search for an fnmatch(3) pattern or regular expression in the pane content and evaluates to zero if not found, or a line number if found.   Like  m,  an  r  flag  means
   search for a regular expression and i ignores case.  For example: #{C/r:^Start}’

   Numeric  operators  may  be  performed by prefixing two comma-separated alternatives with an e and an operator.  An optional f flag may be given after the operator to use floating
   point numbers, otherwise integers are used.  This may be followed by a number giving the number of decimal places to use for the result.  The available operators  are:  addition  +,
   subtraction  -, multiplication *, division /, modulus m or % (note that % must be escaped as %% in formats which are also expanded by strftime(3)) and numeric comparison
   operators ==, !=, <, <=, > and >=.  For example, #{e|*|f|4:5.5,3}’ multiplies 5.5 by 3 for a result with four decimal places and ‘#{e|%%:7,3}’ returns the  modulus  of  7
   and 3.  a replaces a numeric argument by its ASCII equivalent, so #{a:98}’ results in ‘b’.  ‘c’ replaces a tmux colour by its six-digit hexadecimal RGB value.

   A limit may be placed on the length of the resultant string by prefixing it by an =, a number and a colon.  Positive numbers count from the start of the string and negative from the
   end,  so  #{=5:pane_title}’  will  include at most the first five characters of the pane title, or ‘#{=-5:pane_title}’ the last five characters.  A suffix or prefix may be given as a
   second argument - if provided then it is appended or prepended to the string if the length has been trimmed, for example #{=/5/...:pane_title}’ will append ‘...’ if the pane title is
   more than five characters.  Similarly, p pads the string to a given width, for example #{p10:pane_title}’ will result in a width of at least 10 characters.  A positive  width  pads
   on the left, a negative on the right.  n expands to the length of the variable and w to its width when displayed, for example #{n:window_name}’.

   Prefixing  a time variable with t: will convert it to a string, so if #{window_activity}’ gives ‘1445765102’, ‘#{t:window_activity}’ gives ‘Sun Oct 25 09:25:02 2015’.  Adding ‘p (’
   `t/p`) will use shorter but less accurate time format for times in the past.  A custom format may be given using an f suffix (note that % must be escaped as %% if  the  format
   is separately being passed through strftime(3), for example in the status-left option): #{t/f/%%H#:%%M:window_activity}’, see strftime(3).

   The b: and d: prefixes are basename(3) and dirname(3) of the variable respectively.  q: will escape sh(1) special characters or with a h suffix, escape hash characters (so #’
   becomes ##’).  ‘E:’ will expand the format twice, for example ‘#{E:status-left}’ is the result of expanding the content of the status-left option rather than the option itself.  ‘T:’
   is  like  E: but also expands strftime(3) specifiers.  S:, W:, P: or L: will loop over each session, window, pane or client and insert the format once for each.  For windows
   and panes, two comma-separated formats may be given: the second is used for the current window or active pane.  For example, to get a list of windows formatted like the status line:

         #{W:#{E:window-status-format} ,#{E:window-status-current-format} }

   N: checks if a window (without any suffix or with the w suffix) or a session (with the s suffix) name exists, for example `N/w:foo` is replaced with 1 if a window named  foo
   exists.

   A  prefix  of  the  form s/foo/bar/: will substitute foo with bar throughout.  The first argument may be an extended regular expression and a final argument may be i to ignore
   case, for example s/a(.)/\1x/i: would change abABab into bxBxbx.  A different delimiter character may also be used, to avoid collisions with literal slashes in the pattern.  For
   example, s|foo/|bar/|: will substitute foo/ with bar/ throughout.

   In addition, the last line of a shell command's output may be inserted using ‘#()’.  For example, ‘#(uptime)’ will insert the system's uptime.  When constructing  formats,  tmux  does
   not  wait  for  #()’  commands to finish; instead, the previous result from running the same command is used, or a placeholder if the command has not been run before.  If the command
   hasn't exited, the most recent line of output will be used, but the status line will not be updated more than once a second.  Commands are executed using /bin/sh  and  with  the  tmux
   global environment set (see the GLOBAL AND SESSION ENVIRONMENT section).

   An l specifies that a string should be interpreted literally and not expanded.  For example #{l:#{?pane_in_mode,yes,no}}’ will be replaced by ‘#{?pane_in_mode,yes,no}’.

   The following variables are available, where appropriate:

   Variable name          Alias    Replaced with
   active_window_index             Index of active window in session
   alternate_on                    1 if pane is in alternate screen
   alternate_saved_x               Saved cursor X in alternate screen
   alternate_saved_y               Saved cursor Y in alternate screen
   buffer_created                  Time buffer created
   buffer_name                     Name of buffer
   buffer_sample                   Sample of start of buffer
   buffer_size                     Size of the specified buffer in bytes
   client_activity                 Time client last had activity
   client_cell_height              Height of each client cell in pixels
   client_cell_width               Width of each client cell in pixels
   client_control_mode             1 if client is in control mode
   client_created                  Time client created
   client_discarded                Bytes discarded when client behind
   client_flags                    List of client flags
   client_height                   Height of client
   client_key_table                Current key table
   client_last_session             Name of the client's last session
   client_name                     Name of client
   client_pid                      PID of client process
   client_prefix                   1 if prefix key has been pressed
   client_readonly                 1 if client is read-only
   client_session                  Name of the client's session
   client_termfeatures             Terminal features of client, if any
   client_termname                 Terminal name of client
   client_termtype                 Terminal type of client, if available
   client_tty                      Pseudo terminal of client
   client_uid                      UID of client process
   client_user                     User of client process
   client_utf8                     1 if client supports UTF-8
   client_width                    Width of client
   client_written                  Bytes written to client
   command                         Name of command in use, if any
   command_list_alias              Command alias if listing commands
   command_list_name               Command name if listing commands
   command_list_usage              Command usage if listing commands
   config_files                    List of configuration files loaded
   copy_cursor_hyperlink           Hyperlink under cursor in copy mode
   copy_cursor_line                Line the cursor is on in copy mode
   copy_cursor_word                Word under cursor in copy mode
   copy_cursor_x                   Cursor X position in copy mode
   copy_cursor_y                   Cursor Y position in copy mode
   current_file                    Current configuration file
   cursor_character                Character at cursor in pane
   cursor_flag                     Pane cursor flag
   cursor_x                        Cursor X position in pane
   cursor_y                        Cursor Y position in pane
   history_bytes                   Number of bytes in window history
   history_limit                   Maximum window history lines
   history_size                    Size of history in lines
   hook                            Name of running hook, if any
   hook_client                     Name of client where hook was run, if any
   hook_pane                       ID of pane where hook was run, if any
   hook_session                    ID of session where hook was run, if any
   hook_session_name               Name of session where hook was run, if any
   hook_window                     ID of window where hook was run, if any
   hook_window_name                Name of window where hook was run, if any
   host                   #H       Hostname of local host
   host_short             #h       Hostname of local host (no domain name)
   insert_flag                     Pane insert flag
   keypad_cursor_flag              Pane keypad cursor flag
   keypad_flag                     Pane keypad flag
   last_window_index               Index of last window in session
   line                            Line number in the list
   mouse_all_flag                  Pane mouse all flag
   mouse_any_flag                  Pane mouse any flag
   mouse_button_flag               Pane mouse button flag
   mouse_hyperlink                 Hyperlink under mouse, if any
   mouse_line                      Line under mouse, if any
   mouse_sgr_flag                  Pane mouse SGR flag
   mouse_standard_flag             Pane mouse standard flag
   mouse_status_line               Status line on which mouse event took place
   mouse_status_range              Range type or argument of mouse event on status line
   mouse_utf8_flag                 Pane mouse UTF-8 flag
   mouse_word                      Word under mouse, if any
   mouse_x                         Mouse X position, if any
   mouse_y                         Mouse Y position, if any
   next_session_id                 Unique session ID for next new session
   origin_flag                     Pane origin flag
   pane_active                     1 if active pane
   pane_at_bottom                  1 if pane is at the bottom of window
   pane_at_left                    1 if pane is at the left of window
   pane_at_right                   1 if pane is at the right of window
   pane_at_top                     1 if pane is at the top of window
   pane_bg                         Pane background colour
   pane_bottom                     Bottom of pane
   pane_current_command            Current command if available
   pane_current_path               Current path if available
   pane_dead                       1 if pane is dead
   pane_dead_signal                Exit signal of process in dead pane
   pane_dead_status                Exit status of process in dead pane
   pane_dead_time                  Exit time of process in dead pane
   pane_fg                         Pane foreground colour
   pane_format                     1 if format is for a pane
   pane_height                     Height of pane
   pane_id                #D       Unique pane ID
   pane_in_mode                    1 if pane is in a mode
   pane_index             #P       Index of pane
   pane_input_off                  1 if input to pane is disabled
   pane_key_mode                   Extended key reporting mode in this pane
   pane_last                       1 if last pane
   pane_left                       Left of pane
   pane_marked                     1 if this is the marked pane
   pane_marked_set                 1 if a marked pane is set
   pane_mode                       Name of pane mode, if any
   pane_path                       Path of pane (can be set by application)
   pane_pid                        PID of first process in pane
   pane_pipe                       1 if pane is being piped
   pane_right                      Right of pane
   pane_search_string              Last search string in copy mode
   pane_start_command              Command pane started with
   pane_start_path                 Path pane started with
   pane_synchronized               1 if pane is synchronized
   pane_tabs                       Pane tab positions
   pane_title             #T       Title of pane (can be set by application)
   pane_top                        Top of pane
   pane_tty                        Pseudo terminal of pane
   pane_unseen_changes             1 if there were changes in pane while in mode
   pane_width                      Width of pane
   pid                             Server PID
   rectangle_toggle                1 if rectangle selection is activated
   scroll_position                 Scroll position in copy mode
   scroll_region_lower             Bottom of scroll region in pane
   scroll_region_upper             Top of scroll region in pane
   search_count                    Count of search results
   search_count_partial            1 if search count is partial count
   search_match                    Search match if any
   search_present                  1 if search started in copy mode
   selection_active                1 if selection started and changes with the cursor in copy mode
   selection_end_x                 X position of the end of the selection
   selection_end_y                 Y position of the end of the selection
   selection_present               1 if selection started in copy mode
   selection_start_x               X position of the start of the selection
   selection_start_y               Y position of the start of the selection
   server_sessions                 Number of sessions
   session_activity                Time of session last activity
   session_alerts                  List of window indexes with alerts
   session_attached                Number of clients session is attached to
   session_attached_list           List of clients session is attached to
   session_created                 Time session created
   session_format                  1 if format is for a session
   session_group                   Name of session group
   session_group_attached          Number of clients sessions in group are attached to
   session_group_attached_list     List of clients sessions in group are attached to
   session_group_list              List of sessions in group
   session_group_many_attached     1 if multiple clients attached to sessions in group
   session_group_size              Size of session group
   session_grouped                 1 if session in a group
   session_id                      Unique session ID
   session_last_attached           Time session last attached
   session_many_attached           1 if multiple clients attached
   session_marked                  1 if this session contains the marked pane
   session_name           #S       Name of session
   session_path                    Working directory of session
   session_stack                   Window indexes in most recent order
   session_windows                 Number of windows in session
   socket_path                     Server socket path
   start_time                      Server start time
   uid                             Server UID
   user                            Server user
   version                         Server version
   window_active                   1 if window active
   window_active_clients           Number of clients viewing this window
   window_active_clients_list      List of clients viewing this window
   window_active_sessions          Number of sessions on which this window is active
   window_active_sessions_list     List of sessions on which this window is active
   window_activity                 Time of window last activity
   window_activity_flag            1 if window has activity
   window_bell_flag                1 if window has bell
   window_bigger                   1 if window is larger than client
   window_cell_height              Height of each cell in pixels
   window_cell_width               Width of each cell in pixels
   window_end_flag                 1 if window has the highest index
   window_flags           #F       Window flags with # escaped as ##
   window_format                   1 if format is for a window
   window_height                   Height of window
   window_id                       Unique window ID
   window_index           #I       Index of window
   window_last_flag                1 if window is the last used
   window_layout                   Window layout description, ignoring zoomed window panes
   window_linked                   1 if window is linked across sessions
   window_linked_sessions          Number of sessions this window is linked to
   window_linked_sessions_list     List of sessions this window is linked to
   window_marked_flag              1 if window contains the marked pane
   window_name            #W       Name of window
   window_offset_x                 X offset into window if larger than client
   window_offset_y                 Y offset into window if larger than client
   window_panes                    Number of panes in window
   window_raw_flags                Window flags with nothing escaped
   window_silence_flag             1 if window has silence alert
   window_stack_index              Index in session most recent stack
   window_start_flag               1 if window has the lowest index
   window_visible_layout           Window layout description, respecting zoomed window panes
   window_width                    Width of window
   window_zoomed_flag              1 if window is zoomed
   wrap_flag                       Pane wrap flag

STYLES

   tmux offers various options to specify the colour and attributes of aspects of the interface, for example status-style for the status line.  In addition, embedded styles may be speci
   fied in format options, such as status-left, by enclosing them in #[’ and ‘]’.

   A  style  may be the single term default to specify the default style (which may come from an option, for example status-style in the status line) or a space or comma separated list
   of the following:

   fg=colour
           Set the foreground colour.  The colour is one of: black, red, green, yellow, blue, magenta, cyan, white; if supported the bright variants brightred, brightgreen, brightyellow;
           colour0 to colour255 from the 256-colour set; default for the default colour; terminal for the terminal default colour; or a hexadecimal RGB string such as #ffffff’.

   bg=colour
           Set the background colour.

   us=colour
           Set the underscore colour.

   none    Set no attributes (turn off any active attributes).

   acs, bright (or bold), dim, underscore, blink, reverse, hidden, italics, overline, strikethrough, double-underscore, curly-underscore, dotted-underscore, dashed-underscore
           Set an attribute.  Any of the attributes may be prefixed with no to unset.  acs is the terminal alternate character set.

   align=left (or noalign), align=centre, align=right
           Align text to the left, centre or right of the available space if appropriate.

   fill=colour
           Fill the available space with a background colour if appropriate.

   list=on, list=focus, list=left-marker, list=right-marker, nolist
           Mark the position of the various window list components in the status-format option: list=on marks the start of the list; list=focus is the part of the  list  that  should  be
           kept  in focus if the entire list won't fit in the available space (typically the current window); list=left-marker and list=right-marker mark the text to be used to mark that
           text has been trimmed from the left or right of the list if there is not enough space.

   push-default, pop-default
           Store the current colours and attributes as the default or reset to the previous default.  A push-default affects any subsequent use of the default term until  a  pop-default.
           Only one default may be pushed (each push-default replaces the previous saved default).

   range=left, range=right, range=session|X, range=window|X, range=pane|X, range=user|X, norange
           Mark  a  range for mouse events in the status-format option.  When a mouse event occurs in the range=left or range=right range, the StatusLeft and StatusRight key bindings
           are triggered.

           range=session|X, range=window|X and range=pane|X are ranges for a session, window or pane.  These trigger the Status mouse key with the target session, window or pane  given
           by  the  X  argument.   X  is  a session ID, window index in the current session or a pane ID.  For these, the mouse_status_range format variable will be set to session,
           window or pane.

           range=user|X is a user-defined range; it triggers the Status mouse key.  The argument X will be available in the mouse_status_range format variable.  X must be  at  most
           15 bytes in length.

   Examples are:

         fg=yellow bold underscore blink
         bg=black,fg=default,noreverse

NAMES AND TITLES

   tmux distinguishes between names and titles.  Windows and sessions have names, which may be used to specify them in targets and are displayed in the status line and various lists: the
   name is the tmux identifier for a window or session.  Only panes have titles.  A pane's title is typically set by the program running inside the pane using an escape sequence (like it
   would set the xterm(1) window title in X(7)).  Windows themselves do not have titles - a window's title is the title of its active pane.  tmux itself may set the title of the terminal
   in which the client is running, see the set-titles option.

   A session's name is set with the new-session and rename-session commands.  A window's name is set with one of:

   1.      A command argument (such as -n for new-window or new-session).

   2.      An escape sequence (if the allow-rename option is turned on):

                 $ printf '\033kWINDOW_NAME\033\\'

   3.      Automatic renaming, which sets the name to the active command in the window's active pane.  See the automatic-rename option.

   When a pane is first created, its title is the hostname.  A pane's title can be set via the title setting escape sequence, for example:

         $ printf '\033]2;My Title\033\\'

   It can also be modified with the select-pane -T command.

GLOBAL AND SESSION ENVIRONMENT

   When  the  server  is started, tmux copies the environment into the global environment; in addition, each session has a session environment.  When a window is created, the session and
   global environments are merged.  If a variable exists in both, the value from the session environment is used.  The result is the initial environment passed to the new process.

   The update-environment session option may be used to update the session environment from the client when a new session is created or an old reattached.  tmux also initialises the TMUX
   variable with some internal information to allow commands to be executed from inside, and the TERM variable with the correct terminal setting of screen.

   Variables in both session and global environments may be marked as hidden.  Hidden variables are not passed into the environment of new processes and instead can only be used by  tmux
   itself (for example in formats, see the FORMATS section).

   Commands to alter and view the environment are:

   set-environment [-Fhgru] [-t target-session] name [value]
                 (alias: setenv)
           Set or unset an environment variable.  If -g is used, the change is made in the global environment; otherwise, it is applied to the session environment for target-session.  If
           -F  is  present,  then  value  is  expanded as a format.  The -u flag unsets a variable.  -r indicates the variable is to be removed from the environment before starting a new
           process.  -h marks the variable as hidden.

   show-environment [-hgs] [-t target-session] [variable]
                 (alias: showenv)
           Display the environment for target-session or the global environment with -g.  If variable is omitted, all variables are shown.  Variables removed  from  the  environment  are
           prefixed with -.  If -s is used, the output is formatted as a set of Bourne shell commands.  -h shows hidden variables (omitted by default).

STATUS LINE

   tmux includes an optional status line which is displayed in the bottom line of each terminal.

   By  default, the status line is enabled and one line in height (it may be disabled or made multiple lines with the status session option) and contains, from left-to-right: the name of
   the current session in square brackets; the window list; the title of the active pane in double quotes; and the time and date.

   Each line of the status line is configured with the status-format option.  The default is made of three parts: configurable left and right sections (which may contain dynamic  content
   such as the time or output from a shell command, see the status-left, status-left-length, status-right, and status-right-length options below), and a central window list.  By default,
   the window list shows the index, name and (if any) flag of the windows present in the current session in ascending numerical order.  It may be customised with the window-status-format
   and window-status-current-format options.  The flag is one of the following symbols appended to the window name:

         Symbol    Meaning
         *         Denotes the current window.
         -         Marks the last window (previously selected).
         #         Window activity is monitored and activity has been detected.
         !         Window bells are monitored and a bell has occurred in the window.
         ~         The window has been silent for the monitor-silence interval.
         M         The window contains the marked pane.
         Z         The window's active pane is zoomed.

   The # symbol relates to the monitor-activity window option.  The window name is printed in inverted colours if an alert (bell, activity or silence) is present.

   The  colour and attributes of the status line may be configured, the entire status line using the status-style session option and individual windows using the window-status-style win
   dow option.

   The status line is automatically refreshed at interval if it has changed, the interval may be controlled with the status-interval session option.

   Commands related to the status line are as follows:

   clear-prompt-history [-T prompt-type]
                 (alias: clearphist)
           Clear status prompt history for prompt type prompt-type.  If -T is omitted, then clear history for all types.  See command-prompt for possible values for prompt-type.

   command-prompt [-1bFikN] [-I inputs] [-p prompts] [-t target-client] [-T prompt-type] [template]
           Open the command prompt in a client.  This may be used from inside tmux to execute commands interactively.

           If template is specified, it is used as the command.  With -F, template is expanded as a format.

           If present, -I is a comma-separated list of the initial text for each prompt.  If -p is given, prompts is a comma-separated list of prompts which are displayed in order;  oth
           erwise a single prompt is displayed, constructed from template if it is present, or : if not.

           Before  the  command  is  executed, the first occurrence of the string %% and all occurrences of %1 are replaced by the response to the first prompt, all %2 are replaced
           with the response to the second prompt, and so on for further prompts.  Up to nine prompt responses may be replaced (%1 to %9).  %%% is like %% but any quotation marks
           are escaped.

           -1 makes the prompt only accept one key press, in this case the resulting input is a single character.  -k is like -1 but the key press is translated to a key name.  -N  makes
           the prompt only accept numeric key presses.  -i executes the command every time the prompt input changes instead of when the user exits the command prompt.

           -T tells tmux the prompt type.  This affects what completions are offered when Tab is pressed.  Available types are: command, search, target and window-target.

           The following keys have a special meaning in the command prompt, depending on the value of the status-keys option:

                 Function                             vi        emacs
                 Cancel command prompt                q         Escape
                 Delete from cursor to start of word            C-w
                 Delete entire command                d         C-u
                 Delete from cursor to end            D         C-k
                 Execute command                      Enter     Enter
                 Get next command from history                  Down
                 Get previous command from history              Up
                 Insert top paste buffer              p         C-y
                 Look for completions                 Tab       Tab
                 Move cursor left                     h         Left
                 Move cursor right                    l         Right
                 Move cursor to end                   $         C-e
                 Move cursor to next word             w         M-f
                 Move cursor to previous word         b         M-b
                 Move cursor to start                 0         C-a
                 Transpose characters                           C-t

           With -b, the prompt is shown in the background and the invoking client does not exit until it is dismissed.

   confirm-before [-by] [-c confirm-key] [-p prompt] [-t target-client] command
                 (alias: confirm)
           Ask  for  confirmation  before executing command.  If -p is given, prompt is the prompt to display; otherwise a prompt is constructed from command.  It may contain the special
           character sequences supported by the status-left option.  With -b, the prompt is shown in the background and the invoking client does not  exit  until  it  is  dismissed.   -y
           changes the default behaviour (if Enter alone is pressed) of the prompt to run the command.  -c changes the confirmation key to confirm-key; the default is y.

   display-menu  [-OM]  [-b border-lines] [-c target-client] [-C starting-choice] [-H selected-style] [-s style] [-S border-style] [-t target-pane] [-T title] [-x position] [-y position]
           name key command [argument ...]
                 (alias: menu)
           Display a menu on target-client.  target-pane gives the target for any commands run from the menu.

           A menu is passed as a series of arguments: first the menu item name, second the key shortcut (or empty for none) and third the command to run when the  menu  item  is  chosen.
           The  name and command are formats, see the FORMATS and STYLES sections.  If the name begins with a hyphen (-), then the item is disabled (shown dim) and may not be chosen.
           The name may be empty for a separator line, in which case both the key and command should be omitted.

           -b sets the type of characters used for drawing menu borders.  See popup-border-lines for possible values for border-lines.

           -H sets the style for the selected menu item (see STYLES).

           -s sets the style for the menu and -S sets the style for the menu border (see STYLES).

           -T is a format for the menu title (see FORMATS).

           -C sets the menu item selected by default, if the menu is not bound to a mouse key binding.

           -x and -y give the position of the menu.  Both may be a row or column number, or one of the following special values:

                 Value    Flag    Meaning
                 C        Both    The centre of the terminal
                 R        -x      The right side of the terminal
                 P        Both    The bottom left of the pane
                 M        Both    The mouse position
                 W        Both    The window position on the status line
                 S        -y      The line above or below the status line

           Or a format, which is expanded including the following additional variables:

                 Variable name                 Replaced with
                 popup_centre_x                Centered in the client
                 popup_centre_y                Centered in the client
                 popup_height                  Height of menu or popup
                 popup_mouse_bottom            Bottom of at the mouse
                 popup_mouse_centre_x          Horizontal centre at the mouse
                 popup_mouse_centre_y          Vertical centre at the mouse
                 popup_mouse_top               Top at the mouse
                 popup_mouse_x                 Mouse X position
                 popup_mouse_y                 Mouse Y position
                 popup_pane_bottom             Bottom of the pane
                 popup_pane_left               Left of the pane
                 popup_pane_right              Right of the pane
                 popup_pane_top                Top of the pane
                 popup_status_line_y           Above or below the status line
                 popup_width                   Width of menu or popup
                 popup_window_status_line_x    At the window position in status line
                 popup_window_status_line_y    At the status line showing the window

           Each menu consists of items followed by a key shortcut shown in brackets.  If the menu is too large to fit on the terminal, it is not displayed.   Pressing  the  key  shortcut
           chooses  the  corresponding  item.  If the mouse is enabled and the menu is opened from a mouse key binding, releasing the mouse button with an item selected chooses that item
           and releasing the mouse button without an item selected closes the menu.  -O changes this behaviour so that the menu does not close when the mouse button is  released  without
           an item selected the menu is not closed and a mouse button must be clicked to choose an item.

           -M tells tmux the menu should handle mouse events; by default only menus opened from mouse key bindings do so.

           The following keys are available in menus:

                 Key    Function
                 Enter  Choose selected item
                 Up     Select previous item
                 Down   Select next item
                 q      Exit menu

   display-message [-aIlNpv] [-c target-client] [-d delay] [-t target-pane] [message]
                 (alias: display)
           Display  a message.  If -p is given, the output is printed to stdout, otherwise it is displayed in the target-client status line for up to delay milliseconds.  If delay is not
           given, the display-time option is used; a delay of zero waits for a key press.  N ignores key presses and closes only after the delay expires.  If -l is  given,  message  is
           printed unchanged.  Otherwise, the format of message is described in the FORMATS section; information is taken from target-pane if -t is given, otherwise the active pane.

           -v prints verbose logging as the format is parsed and -a lists the format variables and their values.

           -I forwards any input read from stdin to the empty pane given by target-pane.

   display-popup  [-BCE]  [-b  border-lines]  [-c target-client] [-d start-directory] [-e environment] [-h height] [-s border-style] [-S style] [-t target-pane] [-T title] [-w width] [-x
           position] [-y position] [shell-command]
                 (alias: popup)
           Display a popup running shell-command on target-client.  A popup is a rectangular box drawn over the top of any panes.  Panes are not updated while a popup is present.

           -E closes the popup automatically when shell-command exits.  Two -E closes the popup only if shell-command exited with success.

           -x and -y give the position of the popup, they have the same meaning as for the display-menu command.  -w and -h give the width and height - both may be a percentage (followed
           by %).  If omitted, half of the terminal size is used.

           -B does not surround the popup by a border.

           -b sets the type of characters used for drawing popup borders.  When -B is specified, the -b option is ignored.  See popup-border-lines for possible values for border-lines.

           -s sets the style for the popup and -S sets the style for the popup border (see STYLES).

           -e takes the form VARIABLE=value and sets an environment variable for the popup; it may be specified multiple times.

           -T is a format for the popup title (see FORMATS).

           The -C flag closes any popup on the client.

   show-prompt-history [-T prompt-type]
                 (alias: showphist)
           Display status prompt history for prompt type prompt-type.  If -T is omitted, then show history for all types.  See command-prompt for possible values for prompt-type.

BUFFERS

   tmux maintains a set of named paste buffers.  Each buffer may be either explicitly or automatically named.  Explicitly named buffers are named when  created  with  the  set-buffer  or
   load-buffer  commands,  or  by  renaming  an automatically named buffer with set-buffer -n.  Automatically named buffers are given a name such as buffer0001, buffer0002 and so on.
   When the buffer-limit option is reached, the oldest automatically named buffer is deleted.  Explicitly named buffers are not subject to  buffer-limit  and  may  be  deleted  with  the
   delete-buffer command.

   Buffers may be added using copy-mode or the set-buffer and load-buffer commands, and pasted into a window using the paste-buffer command.  If a buffer command is used and no buffer is
   specified, the most recently added automatically named buffer is assumed.

   A configurable history buffer is also maintained for each window.  By default, up to 2000 lines are kept; this can be altered with the history-limit option (see the set-option command
   above).

   The buffer commands are as follows:

   choose-buffer [-NZr] [-F format] [-f filter] [-K key-format] [-O sort-order] [-t target-pane] [template]
           Put a pane into buffer mode, where a buffer may be chosen interactively from a list.  Each buffer is shown on one line.  A shortcut key is shown on the left in brackets allow
           ing for immediate choice, or the list may be navigated and an item chosen or otherwise manipulated using the keys below.  -Z zooms the pane.  The following keys may be used in
           buffer mode:

                 Key    Function
                 Enter  Paste selected buffer
                 Up     Select previous buffer
                 Down   Select next buffer
                 C-s    Search by name or content
                 n      Repeat last search forwards
                 N      Repeat last search backwards
                 t      Toggle if buffer is tagged
                 T      Tag no buffers
                 C-t    Tag all buffers
                 p      Paste selected buffer
                 P      Paste tagged buffers
                 d      Delete selected buffer
                 D      Delete tagged buffers
                 e      Open the buffer in an editor
                 f      Enter a format to filter items
                 O      Change sort field
                 r      Reverse sort order
                 v      Toggle preview
                 q      Exit mode

           After a buffer is chosen, %% is replaced by the buffer name in template and the result executed as a command.  If template is not given, "paste-buffer -p -b '%%'" is used.

           -O  specifies  the initial sort field: one of time (creation), name or size.  -r reverses the sort order.  -f specifies an initial filter: the filter is a format - if it
           evaluates to zero, the item in the list is not shown, otherwise it is shown.  If a filter would lead to an empty list, it is ignored.  -F specifies the format for each item in
           the list and -K a format for each shortcut key; both are evaluated once for each line.  -N starts without the preview.  This command works only if at least one client  is  at
           tached.

   clear-history [-H] [-t target-pane]
                 (alias: clearhist)
           Remove and free the history for the specified pane.  -H also removes all hyperlinks.

   delete-buffer [-b buffer-name]
                 (alias: deleteb)
           Delete the buffer named buffer-name, or the most recently added automatically named buffer if not specified.

   list-buffers [-F format] [-f filter]
                 (alias: lsb)
           List the global buffers.  -F specifies the format of each line and -f a filter.  Only buffers for which the filter is true are shown.  See the FORMATS section.

   load-buffer [-w] [-b buffer-name] [-t target-client] path
                 (alias: loadb)
           Load  the  contents of the specified paste buffer from path.  If -w is given, the buffer is also sent to the clipboard for target-client using the xterm(1) escape sequence, if
           possible.  If path is -, the contents are read from stdin.

   paste-buffer [-dpr] [-b buffer-name] [-s separator] [-t target-pane]
                 (alias: pasteb)
           Insert the contents of a paste buffer into the specified pane.  If not specified, paste into the current one.  With -d, also delete the paste buffer.  When output,  any  line
           feed  (LF)  characters in the paste buffer are replaced with a separator, by default carriage return (CR).  A custom separator may be specified using the -s flag.  The -r flag
           means to do no replacement (equivalent to a separator of LF).  If -p is specified, paste bracket control codes are inserted around the buffer if the application has  requested
           bracketed paste mode.

   save-buffer [-a] [-b buffer-name] path
                 (alias: saveb)
           Save the contents of the specified paste buffer to path.  The -a option appends to rather than overwriting the file.  If path is -, the contents are read from stdin.

   set-buffer [-aw] [-b buffer-name] [-t target-client] [-n new-buffer-name] data
                 (alias: setb)
           Set  the contents of the specified buffer to data.  If -w is given, the buffer is also sent to the clipboard for target-client using the xterm(1) escape sequence, if possible.
           The -a option appends to rather than overwriting the buffer.  The -n option renames the buffer to new-buffer-name.

   show-buffer [-b buffer-name]
                 (alias: showb)
           Display the contents of the specified buffer.

MISCELLANEOUS

   Miscellaneous commands are as follows:

   clock-mode [-t target-pane]
           Display a large clock.

   if-shell [-bF] [-t target-pane] shell-command command [command]
                 (alias: if)
           Execute the first command if shell-command (run with /bin/sh) returns success or the second command otherwise.  Before being executed,  shell-command  is  expanded  using  the
           rules specified in the FORMATS section, including those relevant to target-pane.  With -b, shell-command is run in the background.

           If -F is given, shell-command is not executed but considered success if neither empty nor zero (after formats are expanded).

   lock-server
                 (alias: lock)
           Lock each client individually by running the command specified by the lock-command option.

   run-shell [-bC] [-c start-directory] [-d delay] [-t target-pane] [shell-command]
                 (alias: run)
           Execute  shell-command using /bin/sh or (with -C) a tmux command in the background without creating a window.  Before being executed, shell-command is expanded using the rules
           specified in the FORMATS section.  With -b, the command is run in the background.  -d waits for delay seconds before starting the command.  If -c is given, the current work
           ing directory is set to start-directory.  If -C is not given, any output to stdout is displayed in view mode (in the pane specified by -t or the current pane if omitted) after
           the command finishes.  If the command fails, the exit status is also displayed.

   wait-for [-L | -S | -U] channel
                 (alias: wait)
           When used without options, prevents the client from exiting until woken using wait-for -S with the same channel.  When -L is used, the channel is locked and any  clients  that
           try to lock the same channel are made to wait until the channel is unlocked with wait-for -U.

EXIT MESSAGES

   When a tmux client detaches, it prints a message.  This may be one of:

   detached (from session ...)
           The client was detached normally.

   detached and SIGHUP
           The client was detached and its parent sent the SIGHUP signal (for example with detach-client -P).

   lost tty
           The client's tty(4) or pty(4) was unexpectedly destroyed.

   terminated
           The client was killed with SIGTERM.

   too far behind
           The client is in control mode and became unable to keep up with the data from tmux.

   exited  The server exited when it had no sessions.

   server exited
           The server exited when it received SIGTERM.

   server exited unexpectedly
           The server crashed or otherwise exited without telling the client the reason.

TERMINFO EXTENSIONS

   tmux understands some unofficial extensions to terminfo(5).  It is not normally necessary to set these manually, instead the terminal-features option should be used.

   AX      An existing extension that tells tmux the terminal supports default colours.

   Bidi    Tell tmux that the terminal supports the VTE bidirectional text extensions.

   Cs, Cr  Set  the cursor colour.  The first takes a single string argument and is used to set the colour; the second takes no arguments and restores the default cursor colour.  If set,
           a sequence such as this may be used to change the cursor colour from inside tmux:

                 $ printf '\033]12;red\033\\'

           The colour is an X(7) colour, see XParseColor(3).

   Cmg, Clmg, Dsmg, Enmg
           Set, clear, disable or enable DECSLRM margins.  These are set automatically if the terminal reports it is VT420 compatible.

   Dsbp, Enbp
           Disable and enable bracketed paste.  These are set automatically if the XT capability is present.

   Dseks, Eneks
           Disable and enable extended keys.

   Dsfcs, Enfcs
           Disable and enable focus reporting.  These are set automatically if the XT capability is present.

   Hls     Set or clear a hyperlink annotation.

   Nobr    Tell tmux that the terminal does not use bright colors for bold display.

   Rect    Tell tmux that the terminal supports rectangle operations.

   Smol    Enable the overline attribute.

   Smulx   Set a styled underscore.  The single parameter is one of: 0 for no underscore, 1 for normal underscore, 2 for double underscore, 3 for curly underscore, 4  for  dotted  under
           score and 5 for dashed underscore.

   Setulc, Setulc1, ol
           Set the underscore colour or reset to the default.  Setulc is for RGB colours and Setulc1 for ANSI or 256 colours.  The Setulc argument is (red * 65536) + (green * 256) + blue
           where each is between 0 and 255.

   Ss, Se  Set or reset the cursor style.  If set, a sequence such as this may be used to change the cursor to an underline:

                 $ printf '\033[4 q'

           If Se is not set, Ss with argument 0 will be used to reset the cursor style instead.

   Swd     Set the opening sequence for the working directory notification.  The sequence is terminated using the standard fsl capability.

   Sxl     Indicates that the terminal supports SIXEL.

   Sync    Start (parameter is 1) or end (parameter is 2) a synchronized update.

   Tc      Indicate that the terminal supports the direct colour RGB escape sequence (for example, \e[38;2;255;255;255m).

           If supported, this is used for the initialize colour escape sequence (which may be enabled by adding the initc and ccc capabilities to the tmux terminfo(5) entry).

           This is equivalent to the RGB terminfo(5) capability.

   Ms      Store the current buffer in the host terminal's selection (clipboard).  See the set-clipboard option above and the xterm(1) man page.

   XT      This  is  an existing extension capability that tmux uses to mean that the terminal supports the xterm(1) title set sequences and to automatically set some of the capabilities
           above.

CONTROL MODE

   tmux offers a textual interface called control mode.  This allows applications to communicate with tmux using a simple text-only protocol.

   In control mode, a client sends tmux commands or command sequences terminated by newlines on standard input.  Each command will produce one block of output  on  standard  output.   An
   output  block consists of a %begin line followed by the output (which may be empty).  The output block ends with a %end or %error.  %begin and matching %end or %error have three argu
   ments: an integer time (as seconds from epoch), command number and flags (currently not used).  For example:

         %begin 1363006971 2 1
         0: ksh* (1 panes) [80x24] [layout b25f,80x24,0,0,2] @2 (active)
         %end 1363006971 2 1

   The refresh-client -C command may be used to set the size of a client in control mode.

   In control mode, tmux outputs notifications.  A notification will never occur inside an output block.

   The following notifications are defined:

   %client-detached client
           The client has detached.

   %client-session-changed client session-id name
           The client is now attached to the session with ID session-id, which is named name.

   %config-error error
           An error has happened in a configuration file.

   %continue pane-id
           The pane has been continued after being paused (if the pause-after flag is set, see refresh-client -A).

   %exit [reason]
           The tmux client is exiting immediately, either because it is not attached to any session or an error occurred.  If present, reason describes why the client exited.

   %extended-output pane-id age ... : value
           New form of %output sent when the pause-after flag is set.  age is the time in milliseconds for which tmux had buffered the output before it was sent.   Any  subsequent  argu
           ments up until a single : are for future use and should be ignored.

   %layout-change window-id window-layout window-visible-layout window-flags
           The  layout  of  a  window  with  ID  window-id  changed.   The  new  layout  is  window-layout.  The window's visible layout is window-visible-layout and the window flags are
           window-flags.

   %message message
           A message sent with the display-message command.

   %output pane-id value
           A window pane produced output.  value escapes non-printable characters and backslash as octal \xxx.

   %pane-mode-changed pane-id
           The pane with ID pane-id has changed mode.

   %paste-buffer-changed name
           Paste buffer name has been changed.

   %paste-buffer-deleted name
           Paste buffer name has been deleted.

   %pause pane-id
           The pane has been paused (if the pause-after flag is set).

   %session-changed session-id name
           The client is now attached to the session with ID session-id, which is named name.

   %session-renamed name
           The current session was renamed to name.

   %session-window-changed session-id window-id
           The session with ID session-id changed its active window to the window with ID window-id.

   %sessions-changed
           A session was created or destroyed.

   %subscription-changed name session-id window-id window-index pane-id ... : value
           The value of the format associated with subscription name has changed to value.  See refresh-client -B.  Any arguments after pane-id up until a single : are for  future  use
           and should be ignored.

   %unlinked-window-add window-id
           The window with ID window-id was created but is not linked to the current session.

   %unlinked-window-close window-id
           The window with ID window-id, which is not linked to the current session, was closed.

   %unlinked-window-renamed window-id
           The window with ID window-id, which is not linked to the current session, was renamed.

   %window-add window-id
           The window with ID window-id was linked to the current session.

   %window-close window-id
           The window with ID window-id closed.

   %window-pane-changed window-id pane-id
           The active pane in the window with ID window-id changed to the pane with ID pane-id.

   %window-renamed window-id name
           The window with ID window-id was renamed to name.

ENVIRONMENT

   When tmux is started, it inspects the following environment variables:

   EDITOR    If the command specified in this variable contains the string vi and VISUAL is unset, use vi-style key bindings.  Overridden by the mode-keys and status-keys options.

   HOME      The user's login directory.  If unset, the passwd(5) database is consulted.

   LC_CTYPE  The character encoding locale(1).  It is used for two separate purposes.  For output to the terminal, UTF-8 is used if the -u option is given or if LC_CTYPE contains "UTF-8"
             or  "UTF8".  Otherwise, only ASCII characters are written and non-ASCII characters are replaced with underscores (_).  For input, tmux always runs with a UTF-8 locale.  If
             en_US.UTF-8 is provided by the operating system, it is used and LC_CTYPE is ignored for input.  Otherwise, LC_CTYPE tells tmux what the UTF-8 locale is called on the current
             system.  If the locale specified by LC_CTYPE is not available or is not a UTF-8 locale, tmux exits with an error message.

   LC_TIME   The date and time format locale(1).  It is used for locale-dependent strftime(3) format specifiers.

   PWD       The current working directory to be set in the global environment.  This may be useful if it contains symbolic links.  If the value of the variable does not match  the  cur
             rent working directory, the variable is ignored and the result of getcwd(3) is used instead.

   SHELL     The absolute path to the default shell for new windows.  See the default-shell option for details.

   TMUX_TMPDIR
             The parent directory of the directory containing the server sockets.  See the -L option for details.

   VISUAL    If the command specified in this variable contains the string vi, use vi-style key bindings.  Overridden by the mode-keys and status-keys options.

FILES

   ~/.tmux.conf
   $XDG_CONFIG_HOME/tmux/tmux.conf
   ~/.config/tmux/tmux.conf
                      Default tmux configuration file.
   /etc/tmux.conf     System-wide configuration file.

EXAMPLES

   To create a new tmux session running vi(1):

         $ tmux new-session vi

   Most commands have a shorter form, known as an alias.  For new-session, this is new:

         $ tmux new vi

   Alternatively, the shortest unambiguous form of a command is accepted.  If there are several options, they are listed:

         $ tmux n
         ambiguous command: n, could be: new-session, new-window, next-window

   Within an active session, a new window may be created by typing C-b c (Ctrl followed by the b key followed by the c key).

   Windows may be navigated with: C-b 0 (to select window 0), C-b 1 (to select window 1), and so on; C-b n to select the next window; and C-b p to select the previous window.

   A session may be detached using C-b d (or by an external event such as ssh(1) disconnection) and reattached with:

         $ tmux attach-session

   Typing C-b ?’ lists the current key bindings in the current window; up and down may be used to navigate the list or q to exit from it.

   Commands to be run when the tmux server is started may be placed in the ~/.tmux.conf configuration file.  Common examples include:

   Changing the default prefix key:

         set-option -g prefix C-a
         unbind-key C-b
         bind-key C-a send-prefix

   Turning the status line off, or changing its colour:

         set-option -g status off
         set-option -g status-style bg=blue

   Setting other options, such as the default command, or locking after 30 minutes of inactivity:

         set-option -g default-command "exec /bin/ksh"
         set-option -g lock-after-time 1800

   Creating new key bindings:

         bind-key b set-option status
         bind-key / command-prompt "split-window 'exec man %%'"
         bind-key S command-prompt "new-window -n %1 'ssh %1'"

SEE ALSO

   pty(4)

AUTHORS

   Nicholas Marriott <nicholas.marriott@gmail.com>

Debian $Mdocdate$ TMUX(1)