Showing all groups - Mailing list pgsql-admin

From hehe88hk@yahoo.com.hk (Eric)
Subject Showing all groups
Date
Msg-id f2ccb7a1.0402120809.197672a0@posting.google.com
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Responses Re: Showing all groups
Re: Showing all groups
List pgsql-admin
In PostGres, we can show all existing users by "\du".
However, how to show all existing groups?
Thanks

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