This was a great article written by Emanuel Carabott for TalkTechToMe back in August 2011. There are a lot of things some of you may already know and others which are downright helpful and/or new. No matter how good you think you are there is always something to learn or even to use as a reference point.
1. To quickly list all the groups in your domain, with members, run this command:
dsquery group -limit 0 | dsget group -members –expand