who man page

who — show who is logged on

TL;DR

who

who am i

who -a

who -a -H

Synopsis

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

Description

Print information about users who are currently logged in.

-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
-T, -w, --mesg
add user's message status as +, - or ?
-u, --users
list users logged in
--message
same as -T
--writable
same as -T
--help
display this help and exit
--version
output version information and exit

If FILE is not specified, use /var/run/utmp. /var/log/wtmp as FILE is common. If ARG1 ARG2 given, -m presumed: 'am i' or 'mom likes' are usual.

Author

Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.

Reporting Bugs

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report who translation bugs to <http://translationproject.org/team/>

See Also

Full documentation at: <http://www.gnu.org/software/coreutils/w…>
or available locally via: info '(coreutils) who invocation'

Referenced By

aterm(1), finger(1), mksh(1), rpc.rusersd(8), rusers(1), rwho(1), talk(1), urxvt(1), urxvt256c(1), urxvt-ml(1), users(1), utmp(5), utmpdump(1), w(1), write(1), x11vnc(1).

November 2016 GNU coreutils 8.26 User Commands