#!/bin/bash ACTION="$1" case $ACTION in preInstall) apt-get install -y lliurex-guard-data ;; remove) apt-get remove -y lliurex-guard-standalone lliurex-guard-data TEST=$( dpkg-query -s lliurex-guard-standalone 2> /dev/null| grep Status | cut -d " " -f 4 ) if [ "$TEST" == 'installed' ];then exit 1 fi ;; esac exit 0