mesg(1)
NAME
mesg − permit or deny messages
SYNTAX
mesg [ n ] [ y ]
DESCRIPTION
The mesg command with argument n forbids messages via write and talk(1) by revoking non-user write permission on the user’s terminal. The mesg command with argument y reinstates permission. All by itself, mesg reports the current state without changing it.
DIAGNOSTICS
Exit status is 0 if messages are receivable, 1 if not, 2 on error.
FILES
/dev/tty*