WHO(1)                          User Commands                         WHO(1)

NAME         top

       who - show who is logged on

SYNOPSIS         top

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

DESCRIPTION         top

       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

              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

              same as -T

              same as -T

       --help display this help and exit

              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         top

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

REPORTING BUGS         top

       GNU coreutils online help: <>
       Report who translation bugs to <>

COPYRIGHT         top

       Copyright © 2016 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <>.
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO         top

       Full documentation at: <>
       or available locally via: info '(coreutils) who invocation'

COLOPHON         top

       This page is part of the coreutils (basic file, shell and text
       manipulation utilities) project.  Information about the project can
       be found at ⟨⟩.  If you have a
       bug report for this manual page, see 
       ⟨⟩.  This page was obtained from
       the tarball coreutils-8.25.tar.xz fetched from 
       ⟨⟩ on 2016-10-04.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail

GNU coreutils 8.25              January 2016                          WHO(1)