id(1) — Linux manual page

ID(1)                         User Commands                         ID(1)

NAME         top

       id - print real and effective user and group IDs

SYNOPSIS         top

       id [OPTION]... [USER]...

DESCRIPTION         top

       Print user and group information for each specified USER, or (when
       USER omitted) for the current process.

       -a     ignore, for compatibility with other versions

       -Z, --context
              print only the security context of the process

       -g, --group
              print only the effective group ID

       -G, --groups
              print all group IDs

       -n, --name
              print a name instead of a number, for -u,-g,-G

       -r, --real
              print the real ID instead of the effective ID, with
              -u,-g,-G

       -u, --user
              print only the effective user ID

       -z, --zero
              delimit entries with NUL characters, not whitespace; not
              permitted in default format

       --help display this help and exit

       --version
              output version information and exit

       Without any OPTION, print some useful set of identified
       information.

AUTHOR         top

       Written by Arnold Robbins and David MacKenzie.

REPORTING BUGS         top

       GNU coreutils online help:
       <https://www.gnu.org/software/coreutils/>
       Report any translation bugs to
       <https://translationproject.org/team/>

COPYRIGHT         top

       Copyright © 2025 Free Software Foundation, Inc.  License GPLv3+:
       GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO         top

       Full documentation <https://www.gnu.org/software/coreutils/id>
       or available locally via: info '(coreutils) id invocation'

COLOPHON         top

       This page is part of the coreutils (basic file, shell and text
       manipulation utilities) project.  Information about the project
       can be found at ⟨http://www.gnu.org/software/coreutils/⟩.  If you
       have a bug report for this manual page, see
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GNU coreutils 9.7               April 2025                          ID(1)

Pages that refer to this page: newgrp(1),  sg(1),  strace(1),  credentials(7)

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