WHO(1) - man page online | user commands

Show who is logged on.

February 2017
WHO(1)                                    User Commands                                    WHO(1)


who - show who is logged on


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


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.


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


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


Full documentation at: <> or available locally via: info '(coreutils) who invocation'
GNU coreutils 8.25 February 2017 WHO(1)
This manual Reference Other manuals
who(1) referred by aterm(1) | aterm-ml(1) | bsd-write(1) | chklastlog(1) | chkwtmp(1) | dacs(1) | finger(1) | in.ftpd(8) | inetutils-talk(1) | killer(1) | mksh(1) | netkit-ntalk(1) | nwrite(1) | orville-write(1) | rlpr(1) | rpc.rusersd(8) | rs(1) | runlevel(7) | runlevel(8) | rusers(1)
refer to