Copyright (c) 2003 Gunnar Ritter

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute
it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.

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Sccsid @(#)id.1 1.10 (gritter) 1/24/05
id - print user and group IDs and names /usr/5bin/id

/usr/5bin/id -a /usr/5bin/posix/id [user]

/usr/5bin/posix/id -a [user]

/usr/5bin/posix/id -G [-n] [user]

/usr/5bin/posix/id -g [-nr] [user]

/usr/5bin/posix/id -u [-nr] [user]

The id command outputs the numerical and symbolic user and group IDs of the invoking user or, if the user argument is given for /usr/5bin/posix/id , for the named user. If an effective ID does not match the corresponding real ID, both are printed.

The /usr/5bin/posix/id adds supplementary group memberships to the output by default.

/usr/5bin/s42/id and /usr/5bin/posix2001/id are identical to /usr/5bin/posix/id .

The following options are accepted:

-a Adds supplementary group memberships to the output.

-a Adds the primary group to the list of supplementary groups.

-G Writes real, effective and supplementary group ID numbers only.

-g Writes the effective group ID number only.

-n Modifies the output of the -G , -g , and -u options to print symbolic instead of numeric IDs.

-r Causes real instead of effective IDs to be printed.

-u Writes the effective user ID number only.

/etc/passwd

/etc/group

groups(1), logins(1), getuid(2), geteuid(2), getgroups(2), group(5), passwd(5) Use of id with any options or arguments is unportable. For portable programs, use sed (1) to cut the appropriate portions off the default output of id (using the invariable `uid=' and `gid=' strings as orientation) and groups (1) or logins (1) if you need more information than available by this method.