coreutils (9.4)

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who.1
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.

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

REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT
Copyright © 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/li‐
censes/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
Full documentation <https://www.gnu.org/software/coreutils/who>
or available locally via: info '(coreutils) who invocation'

GNU coreutils 9.4 August 2023 WHO(1)