From 48a04d1c2027ea7880f601adc0c770251f466b07 Mon Sep 17 00:00:00 2001
From: Mostafa Razavi <mostafa@sepent.com>
Date: Fri, 24 Feb 2017 16:08:07 +0330
Subject: [PATCH] Add an option to display version.

Passing -V or --version to multidns will cause the program to display
current version number and exit.
---
 multidns.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/multidns.py b/multidns.py
index 2a02ade..ad55778 100644
--- a/multidns.py
+++ b/multidns.py
@@ -217,13 +217,20 @@ def main():
     parser.add_option("-q", "--quiet", dest = "quiet", \
                       action = "store_true", default = False, \
                       help = "do not print any log")
-    
+    parser.add_option("-V", "--version", dest="display_version",
+                      action="store_true", default=False,
+                      help="print current version and exit.")
+
     parser.set_usage("%s [OPTION]... DNS_SERVER[:PORT]..." % \
                      sys.argv[0])
     parser.set_description(__doc__)
 
     OPTIONS, ARGS = parser.parse_args()
 
+    if OPTIONS.display_version:
+        print("multidns version {}".format(__version__))
+        exit(0)
+
     if len(ARGS) < 1:
         parser.print_help()
         exit(1)