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diff --git a/term-utils/wall.1 b/term-utils/wall.1 new file mode 100644 index 0000000..048de99 --- /dev/null +++ b/term-utils/wall.1 @@ -0,0 +1,103 @@ +.\" 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 . |