From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id bdecc594 for ; Wed, 11 Sep 2019 21:45:01 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id F293294811; Thu, 12 Sep 2019 07:44:59 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id CA44E94790; Thu, 12 Sep 2019 07:44:45 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=ccc.com header.i=@ccc.com header.b="otHc8bam"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id AC4DC94790; Thu, 12 Sep 2019 07:44:43 +1000 (AEST) Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) by minnie.tuhs.org (Postfix) with ESMTPS id 05FC793D35 for ; Thu, 12 Sep 2019 07:44:43 +1000 (AEST) Received: by mail-wm1-f43.google.com with SMTP id q18so5143338wmq.3 for ; Wed, 11 Sep 2019 14:44:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccc.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ErppQg8g4IJN9QxhN16kYWQLYzoeOox7pVLOKS8HpGA=; b=otHc8bamE9uRnjuC1a87IGqBhGemKUeDCdD9hpEVqTEC4jG+jh6u0UGvGigNhzEWHr /PvJjpbsf4UH+vkgRIV5xoaulbdgrUU+W2/DCuqHNuEucJkzxAuglvPdvsekcHex+b3s 8xlH0T8d6b//IHBnU64S/sSzKKQFFStp9iZfA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ErppQg8g4IJN9QxhN16kYWQLYzoeOox7pVLOKS8HpGA=; b=M2XVwG6WhULaJwkROSSADi+0XThqjdyBzs+ak7T1gjoXn6vW/Tnz7CkbCX/LtYbz6a lbCFU3YfzIlcESBYrYMNrYqMCN7x7lqJaU052DBm4ScwGBiVduus82WRTCiR+T8nfu00 m7Cjy2jP5kN7MbYxJlb0l8CAK70ayPPVh4UzD2CNRXPjrgUTLjE7PBIlpbvGuprITwYc P4w2ENLEbC2pEmki4mt01Ea6SdFCeJVTqkO4xoM0dw5ywDOScryewIDcuiIB3RwOWfDj mdkm2f40tzP5mbLGNU6LTgx8nKIDF/8mRxGGUSrzHQ/bmV5MUu0lWpEsXQhU+4c4An9g 9piA== X-Gm-Message-State: APjAAAXrPglA/wuGwuJ4blvX30AOTrkot3l9N+nTsls/xQmAAUbqMvfQ olW0O9cS0A/83iD+79Z2Oj3AGAsJ5Vzaba47fbAuIg== X-Google-Smtp-Source: APXvYqzxwK/KvVDlSoDJ5xeT61g4xhyZR5eGygg3o7UG//4JsmADbucSBDTlz8+A5+JHR8198b8KLgTMv7WJQfAt+R0= X-Received: by 2002:a1c:2d85:: with SMTP id t127mr5929113wmt.81.1568238281206; Wed, 11 Sep 2019 14:44:41 -0700 (PDT) MIME-Version: 1.0 References: <009e01d568c9$afd2ca40$0f785ec0$@ronnatalie.com> In-Reply-To: <009e01d568c9$afd2ca40$0f785ec0$@ronnatalie.com> From: Clem Cole Date: Wed, 11 Sep 2019 17:44:15 -0400 Message-ID: To: Ronald Natalie Content-Type: multipart/alternative; boundary="000000000000acc44605924dedaf" Subject: Re: [TUHS] PWB vs Unix/TS X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000acc44605924dedaf Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Sep 11, 2019 at 1:52 PM wrote: > The Pyramid OS used =E2=80=9Cconditional symlinks=E2=80=9D if I recalled = to implement > switching the bin directories. > > The UCLA LOCUS/IBM Transparent Computing Facility switched versions of > executables by using a =E2=80=9Cmagic=E2=80=9D directory that was conditi= onal on the cpu > type. > Right, TCF did that (Bruce built them IIRC). As I said, I resurrected CSDL's from Masscomp at Locus for TNC which was more general and lost less intrusive (which is how they landed in Tru64 when we sold the TNC to DEC to become TruClusters and I would join them). As for CDSL, I had generalized it for LCC from what I did at Masscomp years before. FWIW: I still think they are a cute idea and solve a number of problems, but alas they are no longer ;-) --000000000000acc44605924dedaf Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Wed, Sep 11, 2019 at 1:52= PM <ron@ronnatalie.com> wr= ote:

The Pyramid OS used =E2=80=9Cconditional symlinks=E2=80=9D i= f I recalled to implement switching the bin directories.

The UCLA LO= CUS/IBM Transparent Computing Facility switched versions of executables by = using a =E2=80=9Cmagic=E2=80=9D directory that was conditional on the cpu t= ype.

Right, TCF did that (Bruce buil= t them IIRC).=C2=A0

As I sa= id, I resurrected=C2=A0CSDL's from=C2=A0Masscomp at Locus for TNC which= was more general and lost less intrusive (which is how they landed in Tru6= 4 when we sold the TNC to DEC to become TruClusters and I would join them).=
As for CDSL, I had generalized it for LCC from what= I did at Masscomp years before.

FWIW:=C2=A0I s= till think they are a cute idea and solve a number of problems, but alas th= ey are no longer ;-)

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