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
GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
General help using GNU software: <https://www.gnu.org/gethelp/>
Report any translation bugs to <https://translationproject.org/team/>
COPYRIGHT
Copyright © 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 9.10 March 2026 id(1)
coreutils 9.10 - Generated Thu Apr 2 14:16:53 CDT 2026