Update help text in smcroute wrapper script

Signed-off-by: Joachim Nilsson <[email protected]>

smcroute

@@ -10,9 +10,30 @@ case "$OP" in
 	smcrouted $*
 	;;
     -h)
-	echo "This is a simple compatibility wrapper script for SMCRoute intended"
-	echo "for use with old style startup scripts.  Use the /etc/smcroute.conf"
-	echo "configuration file instead, see the smcroute(8) man page for help."
+	echo "Usage: smcroute [OPTIONS] [ARGS]"
+	echo
+	echo "  -d       Start daemon"
+	echo "  -k       Kill a running daemon"
+	echo
+	echo "  -h       This help text"
+	echo "  -v       Show version"
+	echo
+	echo "  -a ARGS  Add a multicast route"
+	echo "  -r ARGS  Remove a multicast route"
+	echo
+	echo "  -j ARGS  Join a multicast group"
+	echo "  -l ARGS  Leave a multicast group"
+	echo
+	echo "     <------------- INBOUND -------------->  <----- OUTBOUND ------>"
+	echo "  -a <IFNAME> <SOURCE-IP> <MULTICAST-GROUP>  <IFNAME> [<IFNAME> ...]"
+	echo "  -r <IFNAME> <SOURCE-IP> <MULTICAST-GROUP>"
+	echo
+	echo "  -j <IFNAME> <MULTICAST-GROUP>"
+	echo "  -l <IFNAME> <MULTICAST-GROUP>"
+	echo
+	echo "NOTE: This is a compatibility wrapper script for SMCRoute.  Intended for"
+	echo "      use with old style startup scripts.   It is recommended to migrate"
+	echo "      to /etc/smcroute.conf, see the smcroute(8) man page for help."
 	return 0
 	;;
     -k)