153 lines
4.2 KiB
Groff
153 lines
4.2 KiB
Groff
.\" Copyright (c) 1986, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)who.1 8.2 (Berkeley) 12/30/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 8, 2002
|
|
.Dt WHO 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm who
|
|
.Nd display who is on the system
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl HmqsTu
|
|
.Op Cm am I
|
|
.Op Ar file
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility displays information about currently logged in users.
|
|
By default, this includes the login name, tty name, date and time of login and
|
|
remote hostname if not local.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width indent
|
|
.It Fl H
|
|
Write column headings above the output.
|
|
.It Fl m
|
|
Show information about the terminal attached to standard input only.
|
|
.It Fl q
|
|
.Dq "Quick mode" :
|
|
List the names and number of logged in users in columns.
|
|
All other command line options are ignored.
|
|
.It Fl s
|
|
Show the name, line and time fields only.
|
|
This is the default.
|
|
.It Fl T
|
|
Indicate whether each user is accepting messages.
|
|
One of the following characters is written:
|
|
.Pp
|
|
.Bl -tag -width 1n -compact
|
|
.It Li +
|
|
User is accepting messages.
|
|
.It Li \&-
|
|
User is not accepting messages.
|
|
.It Li \&?
|
|
An error occurred.
|
|
.El
|
|
.It Fl u
|
|
Show idle time for each user in hours and minutes as
|
|
.Ar hh Ns : Ns Ar mm ,
|
|
.Ql \&.
|
|
if the user has been idle less that a minute, and
|
|
.Dq Li old
|
|
if the user has been idle more than 24 hours.
|
|
.It Cm am I
|
|
Equivalent to
|
|
.Fl m .
|
|
.El
|
|
.Pp
|
|
By default,
|
|
.Nm
|
|
gathers information from the file
|
|
.Pa /var/run/utmp .
|
|
An alternate
|
|
.Ar file
|
|
may be specified which is usually
|
|
.Pa /var/log/wtmp
|
|
(or
|
|
.Pa /var/log/wtmp.[0-6]
|
|
depending on site policy as
|
|
.Pa wtmp
|
|
can grow quite large and daily versions may or may not
|
|
be kept around after compression by
|
|
.Xr ac 8 ) .
|
|
The
|
|
.Pa wtmp
|
|
file contains a record of every login, logout,
|
|
crash, shutdown and date change
|
|
since
|
|
.Pa wtmp
|
|
was last truncated or
|
|
created.
|
|
.Pp
|
|
If
|
|
.Pa /var/log/wtmp
|
|
is being used as the file, the user name may be empty
|
|
or one of the special characters '|', '}' and '~'. Logouts produce
|
|
an output line without any user name. For more information on the
|
|
special characters, see
|
|
.Xr utmp 5 .
|
|
.Sh ENVIRONMENT
|
|
The
|
|
.Ev COLUMNS , LANG , LC_ALL
|
|
and
|
|
.Ev LC_TIME
|
|
environment variables affect the execution of
|
|
.Nm
|
|
as described in
|
|
.Xr environ 7 .
|
|
.Sh FILES
|
|
.Bl -tag -width /var/log/wtmp.[0-6] -compact
|
|
.It Pa /var/run/utmp
|
|
.It Pa /var/log/wtmp
|
|
.It Pa /var/log/wtmp.[0-6]
|
|
.El
|
|
.Sh DIAGNOSTICS
|
|
.Ex -std
|
|
.Sh SEE ALSO
|
|
.Xr last 1 ,
|
|
.Xr users 1 ,
|
|
.Xr w 1 ,
|
|
.Xr utmp 5
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
utility conforms to
|
|
.St -p1003.1-2001 .
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
command appeared in
|
|
.At v1 .
|