MESG(C)                                    UNIX System V



     Name
          mesg - permits or denies messages sent to a terminal


     Syntax
          mesg [ n ] [ y ]


     Description
          mesg with  argument  n  forbids  messages  via  write(C)  by
          revoking  nonuser  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(C)


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


     Standards Conformance
          mesg is conformant with:

          AT&T SVID Issue 2, Select Code 307-127;
          and The X/Open Portability Guide II of January 1987.


     (printed 8/28/89)                                  MESG(C)