mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
113 lines
3.4 KiB
Groff
113 lines
3.4 KiB
Groff
.\" Copyright (c) 1987, 1990, 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.
|
|
.\"
|
|
.\" @(#)mesg.1 8.1 (Berkeley) 6/6/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 5, 2002
|
|
.Dt MESG 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mesg
|
|
.Nd display (do not display) messages from other users
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Cm n | Cm y
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility is invoked by a user to control write access others
|
|
have to a terminal device.
|
|
Write access is allowed by default, and programs such as
|
|
.Xr talk 1
|
|
and
|
|
.Xr write 1
|
|
may display messages on the terminal.
|
|
.Pp
|
|
The first terminal device in the sequence of devices associated with standard
|
|
input, standard output and standard error is affected.
|
|
.Pp
|
|
Options available:
|
|
.Bl -tag -width flag
|
|
.It Cm n
|
|
Disallows messages.
|
|
.It Cm y
|
|
Permits messages to be displayed.
|
|
.El
|
|
.Pp
|
|
If no arguments are given,
|
|
.Nm
|
|
displays the present message status to the standard output.
|
|
.Sh EXAMPLES
|
|
Disallow messages from other users to the current terminal:
|
|
.Pp
|
|
.Dl "mesg n"
|
|
.Pp
|
|
Allow messages from other users to
|
|
.Pa ttyp1
|
|
(assuming you are also logged in on that terminal):
|
|
.Pp
|
|
.Dl "mesg y </dev/ttyp1"
|
|
.Sh DIAGNOSTICS
|
|
The
|
|
.Nm
|
|
utility exits with one of the following values:
|
|
.Bl -tag -width flag -compact -offset indent
|
|
.Pp
|
|
.It Li "\ 0"
|
|
Messages are allowed.
|
|
.It Li "\ 1"
|
|
Messages are not allowed.
|
|
.It Li ">1"
|
|
An error has occurred.
|
|
.El
|
|
.Sh COMPATIBILITY
|
|
Previous versions of the
|
|
.Nm
|
|
utility wrote the message status to the standard error output and
|
|
affected the terminal attached to standard error without first trying the
|
|
standard input or output devices.
|
|
.Sh SEE ALSO
|
|
.Xr biff 1 ,
|
|
.Xr talk 1 ,
|
|
.Xr wall 1 ,
|
|
.Xr write 1
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
utility conforms to
|
|
.St -p1003.1-2001 .
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
command appeared in
|
|
.At v1 .
|