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.
Buy it now, or read it online on Safari Bookshelf.
id
id [options] [username]
Display information about yourself or another user: user ID, group ID, effective user ID and group ID if relevant, and additional group IDs.
Options
Print group ID only.
Print supplementary groups only.
With -u, -g, or -G, print user or group name, not number.
With -u, -g, or -G, print real, not effective, user ID or group ID.
Print user ID only.
Print help message and then exit.
Print version information.
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