Screen output is blocked by "| tee" command Post: 302613127

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LEARN ABOUT OSX

mesg

MESG(1) 						    BSD General Commands Manual 						   MESG(1)

NAME

     mesg -- display (do not display) messages from other users

SYNOPSIS

     mesg [n | y]

DESCRIPTION

     The mesg utility is invoked by a user to control write access others have to a terminal device.  Write access is allowed by default, and pro-
     grams such as talk(1) and write(1) may display messages on the terminal.

     The first terminal device in the sequence of devices associated with standard input, standard output and standard error is affected.

     Options available:

     n	   Disallows messages.

     y	   Permits messages to be displayed.

     If no arguments are given, mesg displays the present message status to the standard output.

EXAMPLES

     Disallow messages from other users to the current terminal:

	   mesg n

     Allow messages from other users to ttyp1 (assuming you are also logged in on that terminal):

	   mesg y </dev/ttyp1

DIAGNOSTICS

     The mesg utility exits with one of the following values:

	    0	 Messages are allowed.
	    1	 Messages are not allowed.
	   >1	 An error has occurred.

COMPATIBILITY

     Previous versions of the mesg utility wrote the message status to the standard error output and affected the terminal attached to standard
     error without first trying the standard input or output devices.

SEE ALSO

     biff(1), talk(1), wall(1), write(1)

STANDARDS

     The mesg utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY

     A mesg command appeared in Version 1 AT&T UNIX.

BSD
								    May 5, 2002 							       BSD

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