4.4BSD/usr/share/man/cat1/mesg.0

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MESG(1)                      BSD Reference Manual                      MESG(1)

NNAAMMEE
     mmeessgg - display (do not display) messages from other users

SSYYNNOOPPSSIISS
     mmeessgg [nn | yy]

DDEESSCCRRIIPPTTIIOONN
     The mmeessgg utility is invoked by a users to control write access others
     have to the terminal device associated with the standard error output.
     Write access is allowed by default, and programs such as talk(1) and
     write(1) may display messages on the terminal.

     Options available:

     nn     Disallows messages.

     yy     Permits messages to be displayed.

     If no arguments are given, mmeessgg displays the present message status to
     the standard error output.

     The mmeessgg utility exits with one of the following values:

            0    Messages are allowed.
            1    Messages are not allowed.
                 An error has occurred.

FFIILLEESS
     /dev/[pt]ty[pq]?

SSEEEE AALLSSOO
     biff(1),  talk(1),  write(1)

HHIISSTTOORRYY
     A mmeessgg command appeared in Version 6 AT&T UNIX.

4.4BSD                           June 6, 1993                                1