1.\" Copyright (c) 1987, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)mesg.1 6.6 (Berkeley) 03/14/91 7.\" 8.Vx 9.Vx 10.Dd 11.Dt MESG 1 12.Os 13.Sh NAME 14.Nm mesg 15.Nd Display (do not display) messages from other users 16.Sh SYNOPSIS 17.Nm mesg 18.Op Cm n Li \&| Cm y 19.Sh DESCRIPTION 20The 21.Nm mesg 22utility allows a user to decide if other users may write 23messages to his or her screen. Programs such as 24.Xr talk 1 , 25.Xr write 1 26and 27.Xr echo 1 28are social and display a message on the target user's terminal. 29Sometimes this is inconvenient. 30.Pp 31Options: 32.Tw Ds 33.Tp Cm n 34Disallow messages, providing peace, and informing the contacting 35party 36that `Your party is refusing messages'. 37.Tp Cm y 38Allow messages to be displayed. 39.Tp 40.Pp 41If no arguments are given, 42.Nm mesg 43displays the present message status. 44.Pp 45The 46.Nm mesg 47utility exits with one of the following values: 48.Dw Ds 49.Dp Li \&\ 0 50messages are allowed 51.Dp Li \&\ 1 52messages are not allowed 53.Dp Li \&\-\&1 54An error has occurred. 55.Dp 56.Sh FILES 57.Dw /dev/[pt]ty[pq]? 58.Di L 59.Dp Pa /dev/[pt]ty[pq]? 60.Dp 61.Sh SEE ALSO 62.Xr write 1 , 63.Xr talk 1 , 64.Xr echo 1 , 65.Xr biff 1 66.Sh HISTORY 67A 68.Nm mesg 69command appeared in Version 6 AT&T Unix. 70