id(1)

NAME

id — print user and group IDs and names

SYNOPSIS

id [-u |-g|-G] [-nr] [-P] [user]

DESCRIPTION

The id command writes a message to standard output, giving the user and group IDs and names for the process. If the effective and real IDs are different, both are printed.

If the process has supplementary group affiliations (see groups(1)), the supplementary group affiliations are also written.

If the user operand is specified, and the effective user ID of the process is superuser, the user and group IDs of the selected user are written. In this case, effective IDs are assumed to be identical to real IDs.

Options

The following options modify the behavior described above.

-g: Display only the group ID. The default is the effective group ID; to modify, use the -r option. If the process has supplementary group affiliations that are different from the effective group ID (or the real ID if the -r option is used), display each such affiliation on the same line. The default is decimal format; to modify, use the -n option.
-G: Output all different group IDs (effective, real, and supplementary) only, using the format "%u\\ ". If there is more than one distinct group affiliation, output each such affiliation, using the format " %u", before the <newline> is output.
-n: With A -u, -g, or -G, display the ID name instead of the ID number.
-r: With -u, -g, or -G, display the real ID instead of the effective ID.
-u: Display only the user ID. The default is the effective user ID; to modify, use the -r option. The default is decimal format; to modify, use the -n option.
-P: Display the process resource group ID. See HP Process Resource Manager in DEPENDENCIES.

EXAMPLES

To display the current user and group data:

id

produces:

uid=1834(allanp) gid=20(users) 

To display the group ID number for the current process:

id -g 

produces:

20

To display the group name for the current process:

id -gn 

produces:

users 

To display the user and group data for another user:

id ralford 

produces:

uid=329(ralford) gid=20(users) 

if the effective user ID of the process is superuser. Otherwise, it produces the data for the invoking process.

AUTHOR

id was developed by HP and AT&T.

DEPENDENCIES

HP Process Resource Manager

The -P option requires that the optional HP Process Resource Manager (PRM) software be installed and configured. See prmconfig(1) for a description of how to configure HP PRM, and prmconf(4) for the definition of the process resource group.

STANDARDS CONFORMANCE

id: SVID2, SVID3, XPG2, XPG3, XPG4, POSIX.2

id(1)

Technical documentation

» Table of Contents

» Index

NAME

SYNOPSIS

DESCRIPTION

Options

EXAMPLES

AUTHOR

DEPENDENCIES

HP Process Resource Manager

SEE ALSO

STANDARDS CONFORMANCE