add example to usage string for batch_config.py

diff --git a/tools/batch_config.py b/tools/batch_config.py
index e6be088ed7cb3b4f64d932635aafe339b5f27c50..cf70a8fb9ee943292844ca19d3edaa0c98abd515 100644 (file)
--- a/tools/batch_config.py
+++ b/tools/batch_config.py
@@ -32,7 +32,11 @@ CONTENT_TYPE = "application/" + FORMAT
 
 
 if __name__ == "__main__":
-    usagestr = "Usage: %prog [OPTIONS] <tenant-id> <config-string> [args]"
+    usagestr = "Usage: %prog [OPTIONS] <tenant-id> <config-string> [args]\n" \
+               "Example config-string: net1=instance-1,instance-2:net2=instance-3,instance-4\n" \
+               "This string would create two networks: \n" \
+               "'net1' would have two ports, with iface-ids instance-1 and instance-2 attached\n" \
+               "'net2' would have two ports, with iface-ids instance-3 and instance-4 attached\n"
     parser = OptionParser(usage=usagestr)
     parser.add_option("-H", "--host", dest="host",
       type="string", default="127.0.0.1", help="ip address of api host")