preinst is in mutter-common 3.18.3-0ubuntu2.
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 | #!/bin/sh
set -e
case "$1" in
install|upgrade)
if dpkg --compare-versions "$2" lt "3.4.1-4"; then
rm -f /etc/sgml/mutter-common.cat /etc/sgml/mutter-common.cat.old
fi
;;
esac
|