HOSTNAME=''
[ -r /etc/grml/grml-live.conf ] && . /etc/grml/grml-live.conf
-[ -r /etc/grml/grml-live.local ] && . /etc/grml/grml-live.local
+[ -n "$GRML_LIVE_LOCAL_CONFIG" ] && . "$GRML_LIVE_LOCAL_CONFIG"
[ -n "$HOSTNAME" ] || HOSTNAME=grml
# the hostname of the chroot usually isn't the same as the one for the live-system