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=0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI, PDS_TONAME_EQ_TOLOCAL_SHORT,RCVD_IN_DNSWL_NONE autolearn=no autolearn_force=no version=3.4.4 Received: (qmail 14533 invoked from network); 24 Feb 2021 04:18:47 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 24 Feb 2021 04:18:47 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 6E2FF9C82B; Wed, 24 Feb 2021 14:18:43 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 938EA9C73D; Wed, 24 Feb 2021 14:18:12 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="gaQFA+hC"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 1E8059C6D0; Wed, 24 Feb 2021 14:18:10 +1000 (AEST) Received: from mail-wr1-f68.google.com (mail-wr1-f68.google.com [209.85.221.68]) by minnie.tuhs.org (Postfix) with ESMTPS id 1DC179C6CE for ; Wed, 24 Feb 2021 14:18:09 +1000 (AEST) Received: by mail-wr1-f68.google.com with SMTP id b3so527799wrj.5 for ; Tue, 23 Feb 2021 20:18:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=AOyAF/NJ2uT8zsy8Bn6E1WD9h3lKYloS+9kFdaZ9cyE=; b=gaQFA+hCsnYsFxrfpgGauedQq+EDB3Cf1ZnRVkuwHQ9FjdaVY0vzHK/SC+8zt1WKKN gZRP2/5i201GdlREmqWNPWyCKRD/noRpfR3IbWDD1bODTE4695xMUR5JEdzMOarTGBxX VDPIv1ifA7iL3kSexrEdH7456GpK1L26IvnDk2idkPbgLm96w9Zq4z2fGfTF18f6l40F JtV57e8zMRodqau29wreznFHw2QnOXbNBi5NNmOh0GaDTECfFw+rQhN9NzU/6v0UWECM dcqqvWtYDF1zRissm8GhTDj/yOjQa2yflFgUEPqyFJ0bbvfJ8ktHLEVKinV0ykt0NOpG HdKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=AOyAF/NJ2uT8zsy8Bn6E1WD9h3lKYloS+9kFdaZ9cyE=; b=IyywMu2UyVRyowa8bQ8GBdiQkPmKcUKH86IqvDP9Ubk7+Qdz7iaABa6JouDTwlufTM sYTOx1njf261hN9xl34j4pfhHJgaf3ENWYM+rqlnUXk75qLyZPG88lEbGQ3UYg9fK/Sz lylqSNGnZnicWqicUJsnOousmXlgEI0zUaOLqFy4GX3Z+SkwHz0XTf7unWC/9nTGDdYn 5R8GxUAiv6NYLITVcatkscwr2fYKxkBe33bJuEMFKadwA5Wy7GJW6EVRRPzsBuK1Hsj3 x8Vt1a9QLiPppaBmLlDh2fMIdaviv+f15sFZRnA/Hsf9WUmG/vnc9etXmTT60wgd2PEA Rztw== X-Gm-Message-State: AOAM532+yuo99kk/7kNNg5tUA1+5pOMIkMLTHFY2Tuv+2sZucLU5KPPx LGyXO7NSr2oQzaHEx49Si20jZCpgHMHQkA0ZxrZOfkOxnA== X-Google-Smtp-Source: ABdhPJzV85itBZrk33mO9lmqFnZDeTrS2qWKV3kYuORqNeaPAQdZwo2ZrqQCtrWAMbwL8MmcC/2a8oRl8enjPMeh2o0= X-Received: by 2002:adf:fecc:: with SMTP id q12mr12774108wrs.317.1614140287521; Tue, 23 Feb 2021 20:18:07 -0800 (PST) MIME-Version: 1.0 Received: by 2002:a05:6000:186b:0:0:0:0 with HTTP; Tue, 23 Feb 2021 20:18:07 -0800 (PST) From: Rudi Blom Date: Wed, 24 Feb 2021 11:18:07 +0700 Message-ID: To: tuhs Content-Type: text/plain; charset="UTF-8" Subject: Re: [TUHS] Abstractions 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: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Some additions: Systems with /bin a symlink to /usr/bin Digital UNIX 4.0 Tru64 UNIX 5.0 to 5.1B HP-UX 11i 11.23 and 11.31 Systems with separate /bin and /usr/bin SCO UNIX 3.2 V4.0 to V4.2 -- The more I learn the better I understand I know nothing.