.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.35.
.TH WHO "1" "September 2011" "GNU coreutils 8.12.197-032bb" "User Commands"
.SH NAME
who \- show who is logged on
.SH SYNOPSIS
.B who
[\fIOPTION\fR]... [ \fIFILE | ARG1 ARG2 \fR]
.SH DESCRIPTION
.\" Add any additional description here
.PP
Print information about users who are currently logged in.
.TP
\fB\-a\fR, \fB\-\-all\fR
same as \fB\-b\fR \fB\-d\fR \fB\-\-login\fR \fB\-p\fR \fB\-r\fR \fB\-t\fR \fB\-T\fR \fB\-u\fR
.TP
\fB\-b\fR, \fB\-\-boot\fR
time of last system boot
.TP
\fB\-d\fR, \fB\-\-dead\fR
print dead processes
.TP
\fB\-H\fR, \fB\-\-heading\fR
print line of column headings
.TP
\fB\-\-ips\fR
print ips instead of hostnames. with \fB\-\-lookup\fR,
canonicalizes based on stored IP, if available,
rather than stored hostname
.TP
\fB\-l\fR, \fB\-\-login\fR
print system login processes
.TP
\fB\-\-lookup\fR
attempt to canonicalize hostnames via DNS
.TP
\fB\-m\fR
only hostname and user associated with stdin
.TP
\fB\-p\fR, \fB\-\-process\fR
print active processes spawned by init
.TP
\fB\-q\fR, \fB\-\-count\fR
all login names and number of users logged on
.TP
\fB\-r\fR, \fB\-\-runlevel\fR
print current runlevel
.TP
\fB\-s\fR, \fB\-\-short\fR
print only name, line, and time (default)
.TP
\fB\-t\fR, \fB\-\-time\fR
print last system clock change
.TP
\fB\-T\fR, \fB\-w\fR, \fB\-\-mesg\fR
add user's message status as +, \- or ?
.TP
\fB\-u\fR, \fB\-\-users\fR
list users logged in
.TP
\fB\-\-message\fR
same as \fB\-T\fR
.TP
\fB\-\-writable\fR
same as \fB\-T\fR
.TP
\fB\-\-help\fR
display this help and exit
.TP
\fB\-\-version\fR
output version information and exit
.PP
If FILE is not specified, use /var/run/utmp.  /var/log/wtmp as FILE is common.
If ARG1 ARG2 given, \fB\-m\fR presumed: `am i' or `mom likes' are usual.
.SH AUTHOR
Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.
.SH "REPORTING BUGS"
Report who bugs to bug\-coreutils@gnu.org
.br
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
.br
General help using GNU software: <http://www.gnu.org/gethelp/>
.br
Report who translation bugs to <http://translationproject.org/team/>
.SH COPYRIGHT
Copyright \(co 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
The full documentation for
.B who
is maintained as a Texinfo manual.  If the
.B info
and
.B who
programs are properly installed at your site, the command
.IP
.B info coreutils \(aqwho invocation\(aq
.PP
should give you access to the complete manual.