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who - Unix, Linux Command


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NAME

who - show who is logged on

SYNOPSIS

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

DESCRIPTION

TagDescription
-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

Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

Copyright © 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

who is maintained as a Texinfo manual. If the info and who programs are properly installed at your site, the command
TagDescription
info who
should give you access to the complete manual.

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