Updated usage message

pstjuste · Jul 18, 2011 · ba5be4d · ba5be4d
1 parent f8af4c9
commit ba5be4d
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/src/litter.py b/src/litter.py
@@ -337,6 +337,9 @@ def stop(self):
         self.rqueue.put((None, None))
 
 
+def usage():
+    print "usage: ./litter.py [-i intf] [-n name]"
+
 def main():
 
     dev = "tapipop"
@@ -345,16 +348,17 @@ def main():
     try:
         opts, args = getopt.getopt(sys.argv[1:], "i:n:")
     except getopt.GetoptError, err:
-        print "usage: ./litter.py -i intf -n name"
+        usage()
+        sys.exit()
 
     for o, a in opts:
         if o == "-i":
             dev = a
         elif o == "-n":
             name = a
         else:
-            assert False, "unhandled option"
-
+            usage()
+            sys.exit()
 
     intf = MulticastServer.get_ip_address(dev)
     queue = Queue.Queue()