preinst is in gradm2 3.1~201701031918-2build1.
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 | #!/bin/sh
set -e
case "$1" in
install|abort-upgrade)
;;
upgrade)
if dpkg --compare-versions "$2" lt-nl '3.1~201603152148-1'; then
[ -c /dev/grsec ] && rm -f /dev/grsec
fi
;;
*)
echo "preinst called with unknown argument \`$1'" >&2
exit 0
;;
esac
exit 0
|