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authorKarel Zak2011-03-02 14:18:31 +0100
committerKarel Zak2011-03-02 14:18:31 +0100
commitc4571e49089d981aa8e8f2f350e99839d9f27ec7 (patch)
treeebb57b1e482c84459dfb04fb6852fb11fe0f0249 /term-utils/mesg.1
parentbuild-sys: move reset to term-utils/ (diff)
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build-sys: move mesg to term-utils/
Signed-off-by: Karel Zak <kzak@redhat.com>
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+.\" 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
+.\"
+.\" Fri Mar 10 20:31:02 1995, modified for standard man macros,
+.\" faith@cs.unc.edu
+.\"
+.\"
+.\" "
+.TH MESG 1 "10 March 1995" "Linux 1.2" "Linux Programmer's Manual"
+.SH NAME
+mesg \- display (do not display) messages from other users
+.SH SYNOPSIS
+.B mesg
+.RB [ n | y ]
+.SH DESCRIPTION
+The
+.B mesg
+utility is invoked by a users to control write access others have to the
+terminal device associated with the standard error output. If write access
+is allowed, then programs such as
+.BR talk (1)
+and
+.BR write (1)
+may display messages on the terminal.
+.PP
+Traditionally, write access is allowed by default. However, as users
+become more conscious of various security risks, there is a trend to remove
+write access by default, at least for the primary login shell. To make
+sure your ttys are set the way you want them to be set,
+.B mesg
+should be executed in your login scripts.
+.PP
+Options available:
+.TP
+.B n
+Disallows messages.
+.TP
+.B y
+Permits messages to be displayed.
+.PP
+If no arguments are given,
+.B mesg
+displays the present message status to the standard error output.
+.PP
+The
+.B mesg
+utility exits with one of the following values:
+.TP
+.I "\ 0"
+Messages are allowed.
+.TP
+.I "\ 1"
+Messages are not allowed.
+.TP
+.I "\>1"
+An error has occurred.
+.SH FILES
+.I /dev/[pt]ty[pq]?
+.SH "SEE ALSO"
+.BR biff (1),
+.BR talk (1),
+.BR write (1),
+.BR wall (1),
+.BR login (1),
+.BR xterm (1)
+.SH HISTORY
+A
+.B mesg
+command appeared in Version 6 AT&T UNIX.
+
+.SH AVAILABILITY
+The mesg command is part of the util-linux package and is available from
+ftp://ftp.kernel.org/pub/linux/utils/util-linux/.