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 -ugG -r, --real print the real ID instead of the effective ID, with -ugG -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 GNU coreutils online help: Report any translation bugs to COPYRIGHT Copyright (C) 2024 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later . 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 or available locally via: info '(coreutils) id invocation' GNU coreutils 9.5 August 2024 ID(1)