ansible/ansible — pull request #6833 by angstwad (2014-04-03 00:17:35+00:00)
Title: Add '--list-groups' flag and support to ansible & ansible_playbook

We implemented this in our own scripts, turned out to be really useful for *our* dynamic inventory scripts -- not so useful for really flat orgs, with maybe one/two groups, but, you know, it does what it says it does. It lists groups. :)