id - return user identity

If no user operand is specified id writes user and group IDs and the corresponding user and group names of the invoking process to standard output. If the effective and real IDs do not match, both are written. Any supplementary groups the current process belongs to will also be written.

If a user operand is specified and the process has permission, the user and group IDs and any supplementary group IDs of the selected user will be written to standard output.

If any options are specified, then only a portion of the information is written.

-n, --name

Write the name instead of the numeric ID.

-r, --real

Writes real ID instead of the effective ID.

-a

This option is ignored.

-g, --group

Writes only the group ID.

-u, --user

Writes only the user ID.

-G, --groups

Writes only the supplementary group IDs.

-s, --fair-share

Writes fair share scheduler IDs and groups on systems that support fair share scheduling.

0

Successful completion.

>0

An error occurred.

logname(1), who(1), getgroups(2)

version

id (AT&T Research) 2004-06-11

author

Glenn Fowler <gsf@research.att.com>

author

David Korn <dgk@research.att.com>

copyright

Copyright © 1992-2012 AT&T Intellectual Property

license

http://www.eclipse.org/org/documents/epl-v10.html