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: http://www.gnu.org/software/coreutils/
Report who translation bugs to http://translationproject.org/team/
COPYRIGHT
Copyright © 2017 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later http://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: http://www.gnu.org/software/coreutils/who; or available locally via: info ‘(coreutils) who invocation’