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Path: utzoo!linus!decvax!harpo!seismo!rlgvax!guy
From: guy@rlgvax.UUCP (Guy Harris)
Newsgroups: net.micro
Subject: Re: Unix unter alles - (nf)
Message-ID: <1738@rlgvax.UUCP>
Date: Mon, 20-Feb-84 02:20:17 EST
Article-I.D.: rlgvax.1738
Posted: Mon Feb 20 02:20:17 1984
Date-Received: Tue, 21-Feb-84 03:44:37 EST
References: <5684@uiucdcs.UUCP> <812@omsvax.UUCP>
Organization: CCI Office Systems Group, Reston, VA
Lines: 20

> All our applications were written in COBOL (ugh), and they were of the
> block-mode transaction screen type.  The only exposure the users had to
> the OS was the login and logout.

FYI, under the USG UNIX releases (System III, System V, etc.) it's easy
to eliminate even the exposure to the OS that logging in gives; you can just
tell UNIX to run a program other than the standard "/etc/getty" on some or
all terminal ports (in fact, I'm in the middle of writing a screen-oriented
"getty/login" at this very minute).  (It's possible to do so on other UNIXes,
but you either have to tweak "init" to run a different program based on
information in the "/etc/ttys" configuration file (the USG releases have already
so tweaked "init"), have *every* terminal, including your console DECWriter
if that's what you've got, run a replacement "getty", or tweak "getty" to
do funny things on selected terminals.)

A good reason to wire as little software down in the kernel as you can get
away with...

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy