PREIN

/bin/sh

if [ "$1" = "1" ]; then
	/usr/sbin/groupadd -r -f mlocate
elif [ "$1" = "2" ]; then
	if grep	slocate	/etc/group > /dev/null; then
		/usr/sbin/groupmod -n mlocate slocate
	fi
fi

POSTIN

/bin/sh

# for %ghost:
touch /var/lib/mlocate/mlocate.db