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UNIX for Advanced & Expert Users
message queues
Post 302228868 by tolkki on Monday 25th of August 2008 05:16:20 PM
08-25-2008
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LEARN ABOUT OPENSOLARIS
mesg
mesg(1) User Commands mesg(1) NAME
mesg - permit or deny messages SYNOPSIS
mesg [-n | -y | n | y] DESCRIPTION
The mesg utility will control whether other users are allowed to send messages via write(1), talk(1), or other utilities to a terminal device. The terminal device affected is determined by searching for the first terminal in the sequence of devices associated with standard input, standard output, and standard error, respectively. With no arguments, mesg reports the current state without changing it. Processes with appropriate privileges may be able to send messages to the terminal independent of the current state. OPTIONS
The following options are supported: -n|n Denies permission to other users to send message to the terminal. See write(1). -y|y Grants permission to other users to send messages to the terminal. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of mesg: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 if messages are receivable. 1 if messages are not receivable. 2 on error. FILES
/dev/tty* terminal devices /dev/pts/* terminal devices ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
talk(1), write(1), attributes(5), environ(5), standards(5) SunOS 5.11 31 Oct 1997 mesg(1)