NAME

mesg  −  permit or deny messages

SYNOPSIS

mesg [ n ] [ y ]

DESCRIPTION

Mesg with argument n forbids messages via write(1) by revoking non-user write permission on the user’s terminal. Mesg with argument y reinstates permission.  All by itself, mesg reports the current state without changing it. 

FILES

/dev/tty*
/dev

SEE ALSO

write(1)

DIAGNOSTICS

Exit status is 0 if messages are receivable, 1 if not, 2 on error. 

7th Edition