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[unix-history] / usr / src / usr.bin / wall / wall.1
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1.\" Copyright (c) 1980 Regents of the University of California.
2.\" All rights reserved. The Berkeley software License Agreement
3.\" specifies the terms and conditions for redistribution.
4.\"
55b6a21b 5.\" @(#)wall.1 6.2 (Berkeley) %G%
768d351d 6.\"
5be9d5af 7.TH WALL 1 ""
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8.UC 4
9.SH NAME
10wall \- write to all users
11.SH SYNOPSIS
12.B wall
55b6a21b 13[file]
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14.SH DESCRIPTION
15.I Wall
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16reads
17.I file
18or, by default, the standard input, until an end-of-file.
19It then sends this message, preceded by ``Broadcast Message ...'',
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20to all logged in users.
21.PP
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22The sender should be super-user to override any protections the
23users may have invoked.
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24.SH FILES
25/dev/tty?
26.br
27/etc/utmp
28.SH "SEE ALSO"
55b6a21b 29mesg(1), write(1), shutdown(8)