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The Regents of the University of California. All rights reserved.
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modification, are permitted provided that the following conditions
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1. Redistributions of source code must retain the above copyright
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2. Redistributions in binary form must reproduce the above copyright
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documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
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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
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.Dd February 24, 2012 .Dt WALL 1 .Os .Sh NAME .Nm wall .Nd write a message to users .Sh SYNOPSIS .Nm .Op Fl g Ar group .Op Ar file .Sh DESCRIPTION The .Nm utility displays the contents of .Ar file or, by default, its standard input, on the terminals of all currently logged in users.
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. 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.
.Dd February 24, 2012 .Dt WALL 1 .Os .Sh NAME .Nm wall .Nd write a message to users .Sh SYNOPSIS .Nm .Op Fl g Ar group .Op Ar file .Sh DESCRIPTION The .Nm utility displays the contents of .Ar file or, by default, its standard input, on the terminals of all currently logged in users.
p Only the super-user can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies messages. l -tag -width indent t Fl g Send messages to users in this group. This option may be specified multiple times, and any user in any of the specified groups will receive the message. .El .Sh SEE ALSO .Xr mesg 1 , .Xr talk 1 , .Xr write 1 , .Xr shutdown 8 .Sh HISTORY A .Nm command appeared in PWB UNIX. .Sh BUGS The sender's .Ev LC_CTYPE setting is used to determine which characters are safe to write to a terminal, not the receiver's (which .Nm has no way of knowing).