-if [ -f /etc/ngircd/ngircd.conf ]; then
- # make sure that configuration file is not world readable
- chmod o= /etc/ngircd/ngircd.conf
-fi
+set -e
+
+case "$1" in
+ configure)
+ if [ -f /etc/ngircd/ngircd.conf ]; then
+ # make sure that the configuration file is not
+ # world-readable, it contains passwords!
+ chmod o= /etc/ngircd/ngircd.conf
+ fi
+ ;;
+esac