MESG(1) General Commands Manual MESG(1)NAME
mesg - permit or deny messages
mesg [ n ] [ y ]
Mesg with argument n forbids messages via write and talk(1) by revoking non-user write permission on the user's terminal. Mesg with argu-
ment y reinstates permission. All by itself, mesg reports the current state without changing it.
SEE ALSO write(1), talk(1)DIAGNOSTICS
Exit status is 0 if messages are receivable, 1 if not, 2 on error.
7th Edition April 29, 1985 MESG(1)
Check Out this Related Man Page
MESG(1) BSD General Commands Manual MESG(1)NAME
mesg -- display (do not display) messages from other users
mesg [n | y]
The mesg utility is invoked by a user to control write access others have to a terminal device. Write access is allowed by default, and pro-
grams such as talk(1) and write(1) may display messages on the terminal.
The first terminal device in the sequence of devices associated with standard input, standard output and standard error is affected.
n Disallows messages.
y Permits messages to be displayed.
If no arguments are given, mesg displays the present message status to the standard output.
Disallow messages from other users to the current terminal:
Allow messages from other users to ttyp1 (assuming you are also logged in on that terminal):
mesg y </dev/ttyp1
The mesg utility exits with one of the following values:
0 Messages are allowed.
1 Messages are not allowed.
>1 An error has occurred.
Previous versions of the mesg utility wrote the message status to the standard error output and affected the terminal attached to standard
error without first trying the standard input or output devices.
SEE ALSO biff(1), talk(1), wall(1), write(1)STANDARDS
The mesg utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
A mesg command appeared in Version 1 AT&T UNIX.
BSD May 5, 2002 BSD
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