MESG(1)              INTERACTIVE UNIX System              MESG(1)



          NAME
               mesg - permit or deny messages

          SYNOPSIS
               mesg [ -n ] [ -y ]

          DESCRIPTION
               The mesg command with argument n forbids messages via
               write(1) by revoking non-user write permission on the user's
               terminal.  The mesg command with argument y reinstates per-
               mission.  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.

































          Rev. Base System                                           Page 1