Copyright (c) 1987 Regents of the University of California.
All rights reserved.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the University of California, Berkeley. The name of the
University may not be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
@(#)mesg.1 6.3 (Berkeley) 07/09/88
All rights reserved.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the University of California, Berkeley. The name of the
University may not be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
@(#)mesg.1 6.3 (Berkeley) 07/09/88
MESG 1 ""
.AT 3
NAME
mesg - permit or deny messages
SYNOPSIS
mesg [
n ] [
y ]
DESCRIPTION
Mesg with argument n forbids messages via write
and talk by revoking non-user write permission on the user's
terminal. Mesg with argument y reinstates permission.
Mesg without arguments reports the current state without
changing it.
FILES
/dev/tty*
"SEE ALSO"
write(1), talk(1)
DIAGNOSTICS
Exit status is 0 if messages are receivable, 1 if not, -1 on error.