Linux Command Directory
This directory of Linux commands is from Linux in a Nutshell, 5th Edition.
Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.
groups [options] [users]
Show the groups that each user belongs to (default user is the owner of the current group). Groups are listed in /etc/passwd and /etc/group.
Print help message.
Print version information.