cxmanage: Allow "sensor" command with no sensor_name argument

In this case it's exactly like "sensor list" -- it'll just display
all of the sensors.

1 files changed, 3 insertions, 2 deletions

diff --git a/scripts/cxmanage b/scripts/cxmanage
index b8f3ba9..7a0fd58 100755
--- a/scripts/cxmanage
+++ b/scripts/cxmanage
@@ -163,7 +163,8 @@ def build_parser():
     #sensor command
     p['sensor'] = p['subparsers'].add_parser('sensor',
             help='read sensor value')
-    p['sensor'].add_argument('sensor_name', help='Sensor name to read')
+    p['sensor'].add_argument('sensor_name', help='Sensor name to read',
+            nargs='?')
     p['sensor'].set_defaults(func=sensor_command)
 
     #ipinfo command
@@ -369,7 +370,7 @@ def fwupdate_command(controller, args):
 
 def sensor_command(controller, args):
     """read sensor values from a cluster or host"""
-    if args.sensor_name.upper() == 'LIST':
+    if not args.sensor_name or args.sensor_name.lower() == 'list':
         return controller.get_sensors()
     else:
         return controller.get_sensors(args.sensor_name)