id

id linux command cheatsheet by Thamizhiniyan C S

Introduction

The id command is used to print real and effective user and group IDs


Syntax

id [OPTION]... [USER]...


Important Flags

FlagDescription

-g

Print only the effective group id.

-G

Print all Group ID’s.

-n

Prints name instead of number.

-r

Prints real ID instead of numbers.

-u

Prints only the effective user ID.

–help

Display help messages and exit.

–version

Display the version information and exit.


Examples

CommandDescription
id

Print the current user's UID and GID.

id -u root

Find the UID of the user named "root".

id -g root

Find the GID of the user named "root".

id root

Find the UID and all groups associated with the user "root".

id -G root

Display the UID and all groups a user "root" belongs to.

id -ng root

Display the name instead of numbers for GID of "root".

id -nu root

Display the name instead of numbers for UID of "root".

id -nG root

Display the name instead of numbers for all groups of "root".

id -r -g root

Display the real GID instead of effective GID of "root".

id -r -u root

Display the real UID instead of effective UID of "root".

id -r -G root

Display the real group IDs instead of effective groups of "root".

Last updated