


      MESG(1)                     (UNIX 5.0)                    MESG(1)



      NAME
           mesg - permit or deny messages

      SYNTAX
           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*

      SEE ALSO
           write(1).

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


































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