[ -n "$MODPROBEFILE" ] || MODPROBEFILE=/etc/modprobe.d/grml.conf
[ -r /etc/grml/lsb-functions ] && . /etc/grml/lsb-functions
-if [ -z "$1" ] ; then
+if [ -z "$1" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ] ; then
echo "Usage: $PN <module>"
echo "$PN (un)blacklists module via $MODPROBEFILE"
exit 1