deb-preinst

deb-preinst(5) dpkg suite deb-preinst(5)

NAME

   deb-preinst - package pre-installation maintainer script

SYNOPSIS

   DEBIAN/preinst

DESCRIPTION

   A package can perform several pre-installation actions via maintainer scripts, by including an executable preinst file in its control archive (i.e. DEBIAN/preinst during package
   creation).

   The script can be called in the following ways:

   new-preinst install
       Before the package is installed.

   new-preinst install old-version new-version
       Before a removed package is upgraded.

       The new-version is passed only since dpkg 1.18.5.

   new-preinst upgrade old-version new-version
       Before the package is upgraded.

       The new-version is passed only since dpkg 1.18.5.

   old-preinst abort-upgrade new-version
       If postrm fails during upgrade or fails on failed upgrade.

SEE ALSO

   dpkg(1).

1.22.21 2025-06-30 deb-preinst(5)