postinst is in sabily-gdm-themes 1.4.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24  | #!/bin/sh
# postinst script for sabily-gdm-themes
set -e
case "$1" in
    configure)
      if [ -d /etc/gdm ]; then
        update-alternatives --install /etc/gdm/gdm-cdd.conf gdm-config-derivative /usr/share/sabily-gdm-themes/gdm-cdd.conf 50
      fi
    ;;
    abort-upgrade|abort-remove|abort-deconfigure)
    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac
exit 0
 |