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From: og@litp.UUCP
Newsgroups: comp.unix.questions
Subject: Help needed with slave terminals (4.3bsd)
Message-ID: <406@litp.UUCP>
Date: Wed, 13-May-87 15:48:59 EDT
Article-I.D.: litp.406
Posted: Wed May 13 15:48:59 1987
Date-Received: Sat, 16-May-87 10:07:20 EDT
Organization: L.I.T.P., Universite Paris VI, Paris, FRANCE
Lines: 27


	I work under UNIX 4.3bsd. I want to use a terminal as  a slave
terminal. Say the master terminal is M and the slave is S. I need some
of the output produced by a program running on M to be routed to S and
I need that program to take some of its input from S.

	Now the problem I have  is  the following:  terminal S is  not
hardwired and cannot be hardwired.  So  it's a  plain regular terminal
that can only gain access to the system via login. This implies that a
shell is running on it. Thus it's allright to send  data to it, but if
I type something on its keyboard what I type will be picked  up by the
shell running  on S   rather than by  the program  I'm  running  on  M
eventhough its awaiting input from S. 

	I suspect the solution lies in pseudo-terminals  (pty's) but I
don't quite get how the whole thing works. The manual page is somewhat
cryptic to me. What I need  in  fact is some  program or suggestion of
program that I could run on S and that could make it become a slave.

	For  those who know  Multics  I  want the  equivalent of   the
"slave" command you can give at dialup time instead of "login".
-- 

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