Initial template for commands interface

src/netns/commands.py

+#!/usr/bin/env python
+# vim:ts=4:sw=4:et:ai:sts=4
+
+"""Utility functions to interact with system commands, such as `ip' and
+`tc'."""
+
+def get_interfaces(iface = None):
+    """Returns a dictionary, indexed by interface number, with link and address
+    information about each interface contained in another dict.
+
+    ret = {
+        1: {
+            'name'   : 'lo',
+            'flags'  : ['UP', 'LOOPBACK'],
+            'mtu'    : 16436,
+            'qdisc'  : 'noqueue',
+            'lladdr' : '00:00:00:00:00:00',
+            'addr'   : [ {
+                'addr'  : '127.0.0.1',
+                'plen'  : 8,
+                'bcast' : None,
+                'family': 'inet'
+            }, {
+                'addr'  : '::1',
+                'plen'  : 128,
+                'family': 'inet6'
+            } ]
+        },
+    }"""
+    pass
+
+def get_routes():
+    pass