# who

> Display who is logged in and related data (processes, boot time).
> See also: `whoami`.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/who-invocation.html>.

- Display the username, line, and time of all currently logged-in sessions:

`who`

- Display all available information:

`who {{[-a|--all]}}`

- Display all available information with table headers:

`who {{[-aH|--all --heading]}}`