Unix/Linux Go Back    


OpenDarwin 7.2.1 - man page for id (opendarwin section 1)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


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, oth-
     erwise 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 dis-
     played.  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 differ-
	     ent 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 dis-
	     played, 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
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 07:27 PM.