Added some documentation for the shell return values

lib/ansible/modules/commands/shell.py

@@ -99,3 +99,51 @@ EXAMPLES = '''
   args:
     executable: /bin/bash
 '''
+
+RETURN = '''
+msg:
+    description: changed
+    returned: always
+    type: boolean
+    sample: True
+start:
+    description: The command execution start time
+    returned: always
+    type: string
+    sample: '2016-02-25 09:18:26.429568'
+end:
+    description: The command execution end time
+    returned: always
+    type: string
+    sample: '2016-02-25 09:18:26.755339'
+delta:
+    description: The command execution delta time
+    returned: always
+    type: string
+    sample: '0:00:00.325771'
+stdout:
+    description: The command standard output
+    returned: always
+    type: string
+    sample: 'Clustering node rabbit@slave1 with rabbit@master ...'
+stderr:
+    description: The command standard error
+    returned: always
+    type: string
+    sample: 'ls: cannot access foo: No such file or directory'
+cmd:
+    description: The command executed by the task
+    returned: always
+    type: string
+    sample: 'rabbitmqctl join_cluster rabbit@master'
+rc:
+    description: The command return code (0 means success)
+    returned: always
+    type: int
+    sample: 0
+stdout_lines:
+    description: The command standard output split in lines
+    returned: always
+    type: list of strings
+    sample: [u'Clustering node rabbit@slave1 with rabbit@master ...']
+'''