---
name: "uu-who"
section: "1"
platform: "linux"
package: "uutils-coreutils"
version: "0.12.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/uu-who"
---

# uu-who(1)

Print information about users who are currently logged in.

## NAME

who - Print information about users who are currently logged in.

## SYNOPSIS

**who** \[OPTION\]... \[ FILE \| ARG1 ARG2 \]

## DESCRIPTION

Print information about users who are currently logged in.

## OPTIONS

- **-a**, **--all**

  same as -b -d --login -p -r -t -T -u

- **-b**, **--boot**

  time of last system boot

- **-d**, **--dead**

  print dead processes

- **-H**, **--heading**

  print line of column headings

- **-l**, **--login**

  print system login processes

- **--lookup**

  attempt to canonicalize hostnames via DNS

- **-m**

  only hostname and user associated with stdin

- **-p**, **--process**

  print active processes spawned by init

- **-q**, **--count**

  all login names and number of users logged on

- **-r**, **--runlevel**

  print current runlevel

- **-s**, **--short**

  print only name, line, and time (default)

- **-t**, **--time**

  print last system clock change

- **-u**, **--users**

  list users logged in

- **-T**, **--mesg**

  add user's message status as +, - or ?

- **-h**, **--help**

  Print help

- **-V**, **--version**

  Print version

- \[*FILE*\]

  ## VERSION

v(uutils coreutils) 0.12.0