WHO(1)                                    User Commands                                    WHO(1)



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

       -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.

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

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

COPYRIGHT
       Copyright  }  2013  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
       The  full  documentation  for  who is maintained as a Texinfo manual.  If the info and who
       programs are properly installed at your site, the command

              info coreutils 'who invocation'

       should give you access to the complete manual.



GNU coreutils 8.22                         October 2018                                    WHO(1)