display (do not display) messages from other
utility is invoked by a user to
control write access others have to the terminal device associated with the
standard error output. Write access is allowed by default, and programs such
may display messages on
The options are as follows:
- Disallows messages.
- Permits messages to be displayed.
If no arguments are given,
present message status to the standard error output.
utility exits with one of the
- Messages are allowed.
- Messages are not allowed.
- An error has occurred.
utility is compliant with the
IEEE Std 1003.1-2008
command appeared in
Version 2 AT&T UNIX