Displaying user IDs

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To display the system identifications (IDs) for a specified user, use the id command . The system IDs are numbers that identify users and user groups to the system.

The id command displays the following information, when applicable:

  • User name and real user ID
  • Name of the user's group and real group ID
  • Name of the user's supplementary groups and supplementary group IDs, if any
For example, at the prompt, type the following:
id
The system displays information similar to the following:
uid=1544(sah) gid=300(build) euid=0(root) egid=9(printq) groups=0(system),10(audit)

In this example, the user has user name sah with an ID number of 1544; a primary group name of build with an ID number of 300; an effective user name of root with an ID number of 0; an effective group name of printq with an ID number of 9; and two supplementary group names of system and audit, with ID numbers 0 and 10, respectively.

For example, at the prompt, type the following:
id denise
The system displays information similar to the following:
uid=2988(denise) gid=1(staff)

In this example, the user denise has an ID number of 2988 and has only a primary group name of staff with an ID number of 1.

See the id command in the Commands Reference, Volume 3 for the complete syntax.