Synopsis:
mesg [yes|no]
Description:
This command works exactly like the Unix command of the same name. It
effectively removes the world-write permissions on the client's tty,
such that incoming talk requests and writes are blocked. It is most
useful for dodging "flash" bombs; talk requests with special escape
sequences in the username that scramble vt100 terminals.
MESG used with no arguments displays the current setting.
Other Notes:
This command has the undesired side effect of blocking legitimate talk
requests. Talk and write are not blocked, however, when sent from the
host's superuser.
