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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 02:42:50 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 02:42:50 +0000
commit8cb83eee5a58b1fad74c34094ce3afb9e430b5a4 (patch)
treea9b2e7baeca1be40eb734371e3c8b11b02294497 /term-utils/wall.1
parentInitial commit. (diff)
downloadutil-linux-upstream.tar.xz
util-linux-upstream.zip
Adding upstream version 2.33.1.upstream/2.33.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.\" Copyright (c) 1989, 1990 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.
+.\"
+.\" @(#)wall.1 6.5 (Berkeley) 4/23/91
+.\"
+.TH WALL "1" "August 2013" "util-linux" "User Commands"
+.SH NAME
+wall \- write a message to all users
+.SH SYNOPSIS
+.B wall
+.RB [ \-n ]
+.RB [ \-t
+.IR timeout ]
+.RB [ \-g
+.IR group ]
+.RI [ message " | " file ]
+.SH DESCRIPTION
+.B wall
+displays a
+.IR message ,
+or the contents of a
+.IR file ,
+or otherwise its standard input, on the terminals of all currently logged
+in users. The command will wrap lines that are longer than 79 characters.
+Short lines are whitespace padded to have 79 characters. The command will
+always put a carriage return and new line at the end of each line.
+.PP
+Only the superuser can write on the terminals of users who have chosen to
+deny messages or are using a program which automatically denies messages.
+.PP
+Reading from a
+.I file
+is refused when the invoker is not superuser and the program is
+set-user-ID or set-group-ID.
+.SH OPTIONS
+.TP
+.BR \-n , " \-\-nobanner"
+Suppress the banner.
+.TP
+.BR \-t , " \-\-timeout " \fItimeout\fR
+Abandon the write attempt to the terminals after \fItimeout\fR seconds.
+This \fItimeout\fR must be a positive integer. The default value
+is 300 seconds, which is a legacy from the time when people ran terminals over
+modem lines.
+.TP
+.BR \-g , " \-\-group " \fIgroup\fR
+Limit printing message to members of group defined as a
+.I group
+argument. The argument can be group name or GID.
+.TP
+.BR \-V , " \-\-version"
+Display version information and exit.
+.TP
+.BR \-h , " \-\-help"
+Display help text and exit.
+.SH NOTES
+Some sessions, such as wdm, that have in the beginning of
+.BR utmp (5)
+ut_type data a ':' character will not get the message from
+.BR wall .
+This is done to avoid write errors.
+.SH SEE ALSO
+.BR mesg (1),
+.BR talk (1),
+.BR write (1),
+.BR shutdown (8)
+.SH HISTORY
+A
+.B wall
+command appeared in Version 7 AT&T UNIX.
+.SH AVAILABILITY
+The wall command is part of the util-linux package and is available from
+.UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
+Linux Kernel Archive
+.UE .