snippetbashTip

id — Display current user and group identity. See also: `logname`. More information: <https://www.gnu.org

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the id command: Display current user and group identity. See also: logname. More information: <https://www.gnu.org/software/coreutils/manual/html_node/id-invocation.html>.

Solution

id — Display current user and group identity. See also: logname. More information: <https://www.gnu.org/software/coreutils/manual/html_node/id-invocation.html>.

Display current user's ID (UID), group ID (GID), and groups to which they belong:

id

Display the current user identity:

id {{[-un|--user --name]}}

Display the current user identity as a number:

id {{[-u|--user]}}

Display the current primary group identity:

id {{[-gn|--group --name]}}

Display the current primary group identity as a number:

id {{[-g|--group]}}

Display all groups the current user belongs to:

id {{[-Gn|--groups --name]}}

Display an arbitrary user's ID (UID), group ID (GID), and groups to which they belong:

id {{username}}

Skip name lookup and specify the UID number explicitly:

id +{{uid_number}}

Code Snippets

Display current user's ID (UID), group ID (GID), and groups to which they belong

id

Display the current user identity

id {{[-un|--user --name]}}

Display the current user identity as a number

id {{[-u|--user]}}

Display the current primary group identity

id {{[-gn|--group --name]}}

Display the current primary group identity as a number

id {{[-g|--group]}}

Context

tldr-pages: common/id

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