From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI,
	T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4
Received: (qmail 23452 invoked from network); 1 Mar 2022 21:40:30 -0000
Received: from minnie.tuhs.org (45.79.103.53)
  by inbox.vuxu.org with ESMTPUTF8; 1 Mar 2022 21:40:30 -0000
Received: by minnie.tuhs.org (Postfix, from userid 112)
	id 001959D03A; Wed,  2 Mar 2022 07:40:27 +1000 (AEST)
Received: from minnie.tuhs.org (localhost [127.0.0.1])
	by minnie.tuhs.org (Postfix) with ESMTP id 96CC39CFD0;
	Wed,  2 Mar 2022 07:38:48 +1000 (AEST)
Received: by minnie.tuhs.org (Postfix, from userid 112)
 id AF0C89CFD0; Wed,  2 Mar 2022 07:38:46 +1000 (AEST)
Received: from mcvoy.com (mcvoy.com [192.169.23.250])
 by minnie.tuhs.org (Postfix) with ESMTPS id 525C69CC02
 for <tuhs@minnie.tuhs.org>; Wed,  2 Mar 2022 07:38:46 +1000 (AEST)
Received: by mcvoy.com (Postfix, from userid 3546)
 id EE64835E0B1; Tue,  1 Mar 2022 13:38:45 -0800 (PST)
Date: Tue, 1 Mar 2022 13:38:45 -0800
From: Larry McVoy <lm@mcvoy.com>
To: Richard Salz <rich.salz@gmail.com>
Message-ID: <20220301213845.GH7237@mcvoy.com>
References: <CABH=_VRc29kPrUKUnLyT0P5LUmE0maokp_G9oF9TCNMEHqLa+g@mail.gmail.com>
 <CAFH29tqu2n0_o=0c1jRscToTamdAA1qd6MH3X+bnU478=jHehQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAFH29tqu2n0_o=0c1jRscToTamdAA1qd6MH3X+bnU478=jHehQ@mail.gmail.com>
User-Agent: Mutt/1.5.24 (2015-08-30)
Subject: Re: [TUHS] Pipes and PRISM
X-BeenThere: tuhs@minnie.tuhs.org
X-Mailman-Version: 2.1.26
Precedence: list
List-Id: The Unix Heritage Society mailing list <tuhs.minnie.tuhs.org>
List-Unsubscribe: <https://minnie.tuhs.org/cgi-bin/mailman/options/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=unsubscribe>
List-Archive: <http://minnie.tuhs.org/pipermail/tuhs/>
List-Post: <mailto:tuhs@minnie.tuhs.org>
List-Help: <mailto:tuhs-request@minnie.tuhs.org?subject=help>
List-Subscribe: <https://minnie.tuhs.org/cgi-bin/mailman/listinfo/tuhs>,
 <mailto:tuhs-request@minnie.tuhs.org?subject=subscribe>
Cc: TUHS main list <tuhs@minnie.tuhs.org>
Errors-To: tuhs-bounces@minnie.tuhs.org
Sender: "TUHS" <tuhs-bounces@minnie.tuhs.org>

On Tue, Mar 01, 2022 at 04:25:23PM -0500, Richard Salz wrote:
> The VMS process model is different from Unix; like TOPS-20, it was more a
> shared address space. I don't remember details, but I do recall that a
> "logout" call in a DCL script logged you out of the system.
> 
> Did Softway Systems make kernel changes? I know MSFT's original Posix plan
> was to do it all in user-space.  WSL is a Ubuntu port, so if Softway had
> kernel changes, I could see how that made things simpler.

My memory is that the lower level stuff in NT is actually quite pleasant
and makes it easy to do POSIX on top.