NAME

       deb-preinst - package pre-installation maintainer script

SYNOPSIS

       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 removed package is upgraded.

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

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

SEE ALSO

       dpkg(1).