This file is indexed.

prerm is in xscreensaver 5.30-1+deb8u2.

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
#!/bin/sh

set -e

case "$1" in 
  remove|purge)
	killall -q /usr/bin/xscreensaver || true
	;;
esac