SYNOPSIS
mesg [ n ] [ y ]
DESCRIPTION
The mesg utility is invoked by a users to control write
access others have to the terminal device associated with
the standard error output. If write access is allowed,
then programs such as talk(1) and write(1) may display
messages on the terminal.
Traditionally, write access is allowed by default. How
ever, as users become more conscious of various security
risks, there is a trend to remove write access by default,
at least for the primary login shell. To make sure your
ttys are set the way you want them to be set, mesg should
be executed in your login scripts.
Options available:
n Disallows messages.
y Permits messages to be displayed.
If no arguments are given, mesg displays the present mes
sage status to the standard error output.
The mesg utility exits with one of the following values:
0 Messages are allowed.
1 Messages are not allowed.
>1 An error has occurred.
FILES
/dev/[pt]ty[pq]?
SEE ALSO
biff(1), talk(1), write(1), wall(1), login(1), xterm(1)
HISTORY
A mesg command appeared in Version 6 AT&T UNIX.
Linux 1.2 10 March 1995 MESG(1)
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