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76 lines
2.5 KiB
Groff
76 lines
2.5 KiB
Groff
.\" Copyright (c) 1989, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)wall.1 8.1 (Berkeley) 6/6/93
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.\" $FreeBSD$
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.\"
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.Dd February 24, 2012
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.Dt WALL 1
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.Os
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.Sh NAME
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.Nm wall
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.Nd write a message to users
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.Sh SYNOPSIS
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.Nm
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.Op Fl g Ar group
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.Op Ar file
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.Sh DESCRIPTION
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The
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.Nm
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utility displays the contents of
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.Ar file
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or, by default, its standard input, on the terminals of all
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currently logged in users.
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.Pp
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Only the super-user can write on the
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terminals of users who have chosen
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to deny messages or are using a program which
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automatically denies messages.
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.Bl -tag -width indent
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.It Fl g
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Send messages to users in this group.
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This option may be specified
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multiple times, and any user in any of the specified groups will
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receive the message.
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.El
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.Sh SEE ALSO
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.Xr mesg 1 ,
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.Xr talk 1 ,
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.Xr write 1 ,
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.Xr shutdown 8
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.Sh HISTORY
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A
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.Nm
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command appeared in PWB UNIX.
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.Sh BUGS
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The sender's
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.Ev LC_CTYPE
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setting is used to determine which characters are safe to write to a
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terminal, not the receiver's (which
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.Nm
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has no way of knowing).
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