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From: ber@enea.UUCP (Bjorn Eriksen)
Newsgroups: net.unix,net.unix-wizards
Subject: Can something like Script be done in System V?
Message-ID: <868@enea.UUCP>
Date: Sat, 8-Jun-85 21:31:04 EDT
Article-I.D.: enea.868
Posted: Sat Jun  8 21:31:04 1985
Date-Received: Thu, 13-Jun-85 02:18:21 EDT
Reply-To: ber@enea.UUCP (Bjorn Eriksen)
Organization: ENEA DATA, Sweden
Lines: 45
Xref: watmath net.unix:4773 net.unix-wizards:13514

I'm posting this for a guy (without net access) that has problems
with process communication in System V. What he needs is something
like the script command in 4.[1-2]BSD.
This is how he explains the problem:

	I have been advised to contact you on some Unix problems
	I have. As you know I have been involved in questions I
	can not sort out myself.

	I develop a system based on dialog switching technology
	which calls for "Mire".
	The Mire program controls application systems by (program
	to program) two-pipes read/write communication.
	The Mire control program forks a child, redirects pipes to
	child stdin/stdout, next exec the application. These traditional
	parent-to-child interprocess pipes do not work with screen
	handling programs, like "vi", "more" etc.

	I need some sort of paren-to-child interface to get under
	control applications using screen handlers.
	The Mire control program reads a response from the exec'd
	child application, compare it with a string of text and
	depending on if the comparision is true, sends the new message
	to the application system, otherwise kills the application
	and sends response to end user.

	I can change pipes to Mire-file-child communication if that
	helps me but I can not find a file or "virtual terminal" which
	is suitable for my purpose.

Well System V wizards, how do you do a front end program that has total
terminal control even over a raw mode "application" like vi. 
Some programs don't like to be piped at, so they have to fooled somehow.
I don't know System V that well, so any ideas would be appreciated.
Please also include info about what "version" of System V (that is machine)
it's supposed/not suppused to work on. It's not System V release 2.


-- 
	Bjorn Eriksen
	ENEA DATA Sweden

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