# mesg(1)

    NAME
         mesg - permit or deny messages

    SYNOPSIS
         mesg [ n ] [ y ]

    DESCRIPTION
         Mesg with argument n forbids messages via write and talk(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*

    SEE ALSO
         write(1), talk(1).

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