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

--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.

AUTHOR

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

REPORTING BUGS

GNU coreutils online help: <www.gnu.org/software/coreutils>
Report who translation bugs to <translationproject.org/team>

COPYRIGHT

Copyright © 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <gnu.org/licenses/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 at: <www.gnu.org/software/coreutils/who>
or available locally via: info aq(coreutils) who invocationaq