MESG(1)             UNIX Programmer's Manual              MESG(1)

NAME
     mesg - permit or deny messages

SYNOPSIS
     mesg [ ny ]

DESCRIPTION
     _M_e_s_g with argument n forbids messages via _w_r_i_t_e(1) by revok-
     ing non-user write permission on the user's terminal.  _M_e_s_g
     with argument y reinstates permission.  All by itself, _m_e_s_g
     reports the current state without changing it.

FILES
     /dev/tty            user's terminal

SEE ALSO
     write(1)

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

Printed 5/16/83                                                 1