1WHO(1)                           User Commands                          WHO(1)
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NAME

6       who - show who is logged on
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SYNOPSIS

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

12       Print information about users who are currently logged in.
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14       -a, --all
15              same as -b -d --login -p -r -t -T -u
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17       -b, --boot
18              time of last system boot
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20       -d, --dead
21              print dead processes
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23       -H, --heading
24              print line of column headings
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26       -l, --login
27              print system login processes
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29       --lookup
30              attempt to canonicalize hostnames via DNS
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32       -m     only hostname and user associated with stdin
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34       -p, --process
35              print active processes spawned by init
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37       -q, --count
38              all login names and number of users logged on
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40       -r, --runlevel
41              print current runlevel
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43       -s, --short
44              print only name, line, and time (default)
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46       -t, --time
47              print last system clock change
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49       -T, -w, --mesg
50              add user's message status as +, - or ?
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52       -u, --users
53              list users logged in
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55       --message
56              same as -T
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58       --writable
59              same as -T
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61       --help display this help and exit
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63       --version
64              output version information and exit
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66       If  FILE is not specified, use /var/run/utmp.  /var/log/wtmp as FILE is
67       common.  If ARG1 ARG2 given, -m presumed: `am i'  or  `mom  likes'  are
68       usual.
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AUTHOR

71       Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.
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REPORTING BUGS

74       Report who bugs to bug-coreutils@gnu.org
75       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
76       General help using GNU software: <http://www.gnu.org/gethelp/>
77       Report who translation bugs to <http://translationproject.org/team/>
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80       Copyright  ©  2010  Free Software Foundation, Inc.  License GPLv3+: GNU
81       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
82       This is free software: you are free  to  change  and  redistribute  it.
83       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

86       The  full  documentation for who is maintained as a Texinfo manual.  If
87       the info and who programs are properly installed at your site, the com‐
88       mand
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90              info coreutils 'who invocation'
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92       should give you access to the complete manual.
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96GNU coreutils 8.4                  June 2018                            WHO(1)
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