#!/bin/sh set -e case "$1" in install|upgrade) if ! getent group timetracker >/dev/null; then addgroup --system timetracker fi if ! getent passwd timetracker >/dev/null; then adduser --system timetracker --ingroup timetracker --no-create-home --disabled-password fi ;; abort-upgrade) ;; *) echo "preinst called with unknown argument \`$1'" >&2 exit 1 ;; esac exit 0