mesg

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mesg is a Unix command that sets or reports the permission other users have to write to the current user's terminal using the talk and write commands.

Usage

It is invoked as:

mesg [y|n]

The 'y' and 'n'

Input redirection may be used to control the permission of another TTY. For example:

% mesg
is y
% tty
/dev/tty1
% mesg < /dev/tty2
is y
% mesg n < /dev/tty2
% mesg < /dev/tty2
is n
% mesg
is y

See also

The Wikibook Guide to Unix has a page on the topic of: Commands

• List of Unix commands

References

• mesg – Shell and Utilities Reference,
  The Single UNIX Specification, Version 4 from The Open Group