ID(1)                            User Commands                           ID(1)

NAME
       id - print real and effective user and group IDs

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

DESCRIPTION
       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
       Written by Arnold Robbins and David MacKenzie.

REPORTING BUGS
       Report bugs to: <bug-coreutils@gnu.org>.
       Report any translation bugs to: <https://translationproject.org/team/>.
       GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
       General help using GNU software: <https://www.gnu.org/gethelp/>

COPYRIGHT
       Copyright (C) 2026 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
       Full documentation <https://www.gnu.org/software/coreutils/id>
       or available locally via: info '(coreutils) id invocation'

GNU coreutils 9.12              September 2026                           ID(1)