[mhonarc] add help to command line arguments

[Olav Vitters <ovitters src gnome org>]

commit 870774bc67406a29a00e2204310f57b577a9ba8e
Author: Olav Vitters <olav vitters nl>
Date:   Fri Feb 15 14:53:15 2013 +0100

    add help to command line arguments

 archive.py |   18 +++++++++---------
 1 files changed, 9 insertions(+), 9 deletions(-)
---
diff --git a/archive.py b/archive.py
index be2497a..5eb1fc8 100755
--- a/archive.py
+++ b/archive.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python -3
+#!/usr/bin/python
 
 import os
 import os.path
@@ -561,16 +561,16 @@ def main():
     description = """Archive an email or an mbox per month using mhonarc"""
     epilog="""Report bugs to https://bugzilla.gnome.org/enter_bug.cgi?product=sysadmin""";
     parser = argparse.ArgumentParser(description=description,epilog=epilog)
-    parser.add_argument('--debug',   action='store_true')
-    parser.add_argument('--private', action='store_true')
-    parser.add_argument('--start-time', type=mkdate)
-    parser.add_argument('--end-time', type=mkdate)
-    parser.add_argument('--listname', required=True)
+    parser.add_argument('--debug',   action='store_true', help='Show debugging messages')
+    parser.add_argument('--private', action='store_true', help='Private mailing list')
+    parser.add_argument('--start-time', type=mkdate, help='Only archive messages received on or after 
START_TIME')
+    parser.add_argument('--end-time', type=mkdate, help='Only archive messages received before or on 
END_TIME')
+    parser.add_argument('--listname', required=True, help='Name of the mailing list')
 
     group = parser.add_mutually_exclusive_group()
-    group.add_argument('--makeindex', action='store_true')
-    group.add_argument('infile', nargs='?', type=argparse.FileType('r'),
-                       default=sys.stdin)
+    group.add_argument('--makeindex', action='store_true', help='Recreate the index page to the indivual 
months')
+    group.add_argument('infile', nargs='?', type=argparse.FileType('r'), metavar='FILE',
+                       default=sys.stdin, help='email or mbox to archive')
 
 
     options = parser.parse_args()