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id(1) [ultrix man page]

id(1)							      General Commands Manual							     id(1)

Name
       id - print user and group ID and names

Syntax
       id [ -gnru ]

Description
       The  command  writes a message on the standard output giving the user and group ID and the corresponding names of the invoking process.	If
       the effective and real IDs do not match, both are printed.

       If multiple groups are supported by the underlying system, the supplementary group affiliations of the invoking process are also written.

       When no options are specified, the standard format of output produced by is uid=%d(%s) gid=%d(%s), <real user id>, <user-name>, <real group
       id>, <group-name>

Options
       -g     Outputs only the group ID. The default format is %d
.  This may be modified by the -n option. The default group ID is the effective
	      group ID; this may be modified by the -r option.

       -n     Outputs the name in the format %s
 instead of the numeric ID when the -u or -g options are used.

       -r     Outputs the real ID instead of the effective ID when the -u or -g options are used.  There is no option to produce a list of supple-
	      mentary group IDs alone.

       -u     Outputs  only  the user ID. The default output format is %d0fP.  This may be modified with the -n option. The default user ID is the
	      effective user ID; this may be modified by the -r option.

See Also
       logname(1), getuid(2)

																	     id(1)

Check Out this Related Man Page

ID(1)							    BSD General Commands Manual 						     ID(1)

NAME
id -- return user identity SYNOPSIS
id [user] id -G [-n] [user] id -P [user] id -g [-nr] [user] id -p [user] id -u [-nr] [user] DESCRIPTION
The id utility displays the user and group names and numeric IDs, of the calling process, to the standard output. If the real and effective IDs are different, both are displayed, otherwise only the real ID is displayed. If a user (login name or user ID) is specified, the user and group IDs of that user are displayed. In this case, the real and effective IDs are assumed to be the same. The options are as follows: -G Display the different group IDs (effective, real and supplementary) as white-space separated numbers, in no particular order. -P Display the id as a password file entry. -g Display the effective group ID as a number. -n Display the name of the user or group ID for the -G, -g and -u options instead of the number. If any of the ID numbers cannot be mapped into names, the number will be displayed as usual. -p Make the output human-readable. If the user name returned by getlogin(2) is different from the login name referenced by the user ID, the name returned by getlogin(2) is displayed, preceded by the keyword ``login''. The user ID as a name is displayed, preceded by the keyword ``uid''. If the effective user ID is different from the real user ID, the real user ID is displayed as a name, preceded by the keyword ``euid''. If the effective group ID is different from the real group ID, the real group ID is displayed as a name, preceded by the keyword ``rgid''. The list of groups to which the user belongs is then displayed as names, preceded by the keyword ``groups''. Each display is on a separate line. -r Display the real ID for the -g and -u options instead of the effective ID. -u Display the effective user ID as a number. DIAGNOSTICS
The id utility exits 0 on success, and >0 if an error occurs. SEE ALSO
who(1) STANDARDS
The id function is expected to conform to IEEE Std 1003.2 (``POSIX.2''). HISTORY
The historic groups(1) command is equivalent to ``id -Gn [user]''. The historic whoami(1) command is equivalent to ``id -un''. The id command appeared in 4.4BSD. BSD
June 6, 1993 BSD
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