1.\" Copyright (c) 1989, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)wall.1 8.1 (Berkeley) 6/6/93 29.\" $FreeBSD: src/usr.bin/wall/wall.1,v 1.3.2.5 2002/07/15 08:14:59 keramida Exp $ 30.\" $DragonFly: src/usr.bin/wall/wall.1,v 1.3 2007/07/30 22:11:33 swildner Exp $ 31.\" 32.Dd June 6, 1993 33.Dt WALL 1 34.Os 35.Sh NAME 36.Nm wall 37.Nd write a message to users 38.Sh SYNOPSIS 39.Nm 40.Op Fl g Ar group 41.Op Ar file 42.Sh DESCRIPTION 43The 44.Nm 45utility displays the contents of 46.Ar file 47or, by default, its standard input, on the terminals of all 48currently logged in users. 49.Pp 50Only the super-user can write on the 51terminals of users who have chosen 52to deny messages or are using a program which 53automatically denies messages. 54.Bl -tag -width indent 55.It Fl g 56Send messages to users in this group. This option may be specified 57multiple times, and any user in any of the specified groups will 58receive the message. 59.El 60.Sh SEE ALSO 61.Xr mesg 1 , 62.Xr talk 1 , 63.Xr write 1 , 64.Xr shutdown 8 65.Sh HISTORY 66A 67.Nm 68command appeared in PWB 69.Ux . 70