## NAME

who - show who is logged on

## 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

--ips print ips instead of hostnames. with --lookup, canonicalizes based on stored IP, if available, rather than stored hostname

-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/>

## COPYRIGHT

Copyright © 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

## SEE ALSO

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