ddrescuelog

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NAME

   ddrescuelog - tool for ddrescue mapfiles

SYNOPSIS

   ddrescuelog [options] mapfile

DESCRIPTION

   GNU ddrescuelog is a tool that manipulates ddrescue mapfiles, shows mapfile contents, converts mapfiles to/from other formats, compares mapfiles, tests rescue status, and can delete a
   mapfile if the rescue is done. Ddrescuelog operations can be restricted to one or several parts of the mapfile if the domain setting options are used.

   Use  a  hyphen '-' as mapfile to read the mapfile from standard input (also in the options taking a mapfile argument) or to write the mapfile created by '--create-mapfile' to standard
   output.

   NOTE: In versions of ddrescue prior to 1.20 the mapfile was called 'logfile'. The format is the same; only the name has changed.

OPTIONS

   -h, --help
          display this help and exit

   -V, --version
          output version information and exit

   -a, --change-types=<ot>,<nt>
          change the block types of mapfile

   -A, --annotate-mapfile
          add comments with human-readable pos/sizes

   -b, --block-size=<bytes>
          block (sector) size in bytes [default 512]

   -B, --binary-prefixes
          show binary multipliers in numbers [SI]

   -c, --create-mapfile[=<tt>]
          create mapfile from list of blocks [+-]

   -C, --complete-mapfile[=<t>]
          complete mapfile adding blocks of type t [?]

   -d, --delete-if-done
          delete the mapfile if rescue is finished

   -D, --done-status
          return 0 if rescue is finished

   -f, --force
          overwrite existing output files

   -F, --format=<name>
          format for -c and -l (list, bitmap-[bl]e)

   -i, --input-position=<bytes>
          starting position of rescue domain [0]

   -l, --list-blocks=<types>
          print block numbers of given types (?*/-+)

   -L, --loose-domain
          accept unordered domain mapfile with gaps

   -m, --domain-mapfile=<file>
          restrict domain to finished blocks in <file>

   -n, --invert-mapfile
          invert block types (finished <--> others)

   -o, --output-position=<bytes>
          starting position in output file [ipos]

   -p, --compare-mapfile=<file>
          compare block types in domain of both files

   -P, --compare-as-domain=<file>
          like -p but compare finished blocks only

   -q, --quiet
          suppress all messages

   -s, --size=<bytes>
          maximum size of rescue domain to be processed

   -t, --show-status
          show a summary of mapfile contents

   -v, --verbose
          be verbose (a 2nd -v gives more)

   -x, --xor-mapfile=<file>
          XOR the finished blocks in file with mapfile

   -y, --and-mapfile=<file>
          AND the finished blocks in file with mapfile

   -z, --or-mapfile=<file>
          OR the finished blocks in file with mapfile

   --shift
          shift all block positions by (opos - ipos)

   Numbers may be in decimal, hexadecimal, or octal, and may be followed by a multiplier: s = sectors, k = 1000, Ki = 1024, M = 10^6, Mi = 2^20, etc...

   Exit status: 0 for a normal exit, 1 for environmental problems (file not found, invalid command-line options, I/O errors, etc), 2 to indicate a corrupt or invalid input file, 3 for an
   internal consistency error (e.g., bug) which caused ddrescuelog to panic.

REPORTING BUGS

   Report bugs to bug-ddrescue@gnu.org
   Ddrescue home page: http://www.gnu.org/software/ddrescue/ddrescue.html
   General help using GNU software: http://www.gnu.org/gethelp

COPYRIGHT

   Copyright © 2025 Antonio Diaz Diaz.  License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
   This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

   The full documentation for ddrescuelog is maintained as a Texinfo manual.  If the info and ddrescuelog programs are properly installed at your site, the command

          info ddrescue

   should give you access to the complete manual.

GNU ddrescuelog 1.29 January 2025 DDRESCUELOG(1)