DragonFly On-Line Manual Pages
MESG(1) DragonFly General Commands Manual MESG(1)
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 programs
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.
The mesg utility exits with one of the following values:
0 Messages are allowed.
1 Messages are not allowed.
>1 An error has occurred.
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
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.
biff(1), talk(1), wall(1), write(1)
The mesg utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
A mesg command appeared in Version 1 AT&T UNIX.
DragonFly 3.9 April 10, 2013 DragonFly 3.9