#!/bin/bash dpkg -l | grep "^ii $1 " > /dev/null RET="$?" if [[ "$RET" != "0" ]] && command -v bookworm-run > /dev/null;then echo "Try ACE Bookworm" bookworm-run dpkg -l | grep "^ii $1 " > /dev/null RET="$?" exit "$RET" fi exit "$RET"