-if [ -n "$update_notifier_version" ]; then
- chroot /root sudo -u "$USERNAME" gconftool-2 -t bool -s /apps/update-notifier/show_apport_crashes true
+
+if [ -n "${update_notifier_version}" ]
+then
+ chroot /root sudo -u "${USERNAME}" gconftool-2 -t bool -s /apps/update-notifier/show_apport_crashes true