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mesg(C)

mesg -- permit or deny messages sent to a terminal

Syntax

mesg [ [ n | -n ] | [ y | -y ] ]

Description

The mesg command with argument n forbids messages via write(C) and talk(TC) by revoking non-user write permission on the user's terminal. mesg with argument y reinstates permission. By itself, mesg reports the current state without changing it.

Exit values

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

Files

/dev/tty*

See also

write(C)

Standards conformance

mesg is conformant with:

ISO/IEC DIS 9945-2:1992, Information technology - Portable Operating System Interface (POSIX) - Part 2: Shell and Utilities (IEEE Std 1003.2-1992);
AT&T SVID Issue 2;
X/Open CAE Specification, Commands and Utilities, Issue 4, 1992.

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