prerm is in pekwm 0.1.17-3.
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  | #!/bin/sh
set -e
case "$1" in
	remove)
		rm -f /etc/pekwm/debian-menu
		;;
esac
# Automatically added by dh_installwm
if [ "$1" = "remove" ]; then
	update-alternatives --remove x-window-manager /usr/bin/pekwm
fi
# End automatically added section
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