projects / unix-history / blame
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1 | .\" Copyright (c) 1987 Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms are permitted | |
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5 | .\" provided that the above copyright notice and this paragraph are |
| 6 | .\" duplicated in all such forms and that any documentation, | |
| 7 | .\" advertising materials, and other materials related to such | |
| 8 | .\" distribution and use acknowledge that the software was developed | |
| 9 | .\" by the University of California, Berkeley. The name of the | |
| 10 | .\" University may not be used to endorse or promote products derived | |
| 11 | .\" from this software without specific prior written permission. | |
| 12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 14 | .\" WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 89d2fa3a | 15 | .\" |
| 57a981eb | 16 | .\" @(#)mesg.1 6.3 (Berkeley) %G% |
| 60192166 | 17 | .\" |
| 813d70e0 | 18 | .TH MESG 1 "" |
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19 | .AT 3 |
| 20 | .SH NAME | |
| 21 | mesg \- permit or deny messages | |
| 22 | .SH SYNOPSIS | |
| 23 | .B mesg | |
| 24 | [ | |
| 25 | .B n | |
| 26 | ] [ | |
| 27 | .B y | |
| 28 | ] | |
| 29 | .SH DESCRIPTION | |
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30 | \fIMesg\fP with argument \fBn\fP forbids messages via \fIwrite\fP |
| 31 | and \fItalk\fP by revoking non-user write permission on the user's | |
| 32 | terminal. \fIMesg\fP with argument \fBy\fP reinstates permission. | |
| 33 | \fIMesg\fP without arguments reports the current state without | |
| 34 | changing it. | |
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35 | .SH FILES |
| 36 | /dev/tty* | |
| 37 | .SH "SEE ALSO" | |
| 7846d13a | 38 | write(1), talk(1) |
| 60192166 | 39 | .SH DIAGNOSTICS |
| 89d2fa3a | 40 | Exit status is 0 if messages are receivable, 1 if not, -1 on error. |