mesg - display (or do not display) messages from other users
utility is invoked by a user to control write access others have
to the terminal device associated with standard error output. If write access
is allowed, then programs such as talk(1)
display messages on the terminal.
Traditionally, write access is allowed by default. However, 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
- Disallow messages.
- Allow messages to be displayed.
If no arguments are given, mesg
shows the current message status on
standard error output.
- -v, --verbose
- Explain what is being done.
- -V, --version
- Display version information and exit.
- -h, --help
- Display help text and exit.
utility exits with one of the following values:
- Messages are allowed.
- Messages are not allowed.
- An error has occurred.
command appeared in Version 6 AT&T UNIX.
The mesg command is part of the util-linux package and is available from