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=-0.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 46a5096b for ; Fri, 17 Jan 2020 14:51:54 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 49DAC9C0FA; Sat, 18 Jan 2020 00:51:53 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id DE0559C0F7; Sat, 18 Jan 2020 00:50:43 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (1024-bit key; unprotected) header.d=ccc.com header.i=@ccc.com header.b="H7BzeKJP"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 4EC689C0F7; Sat, 18 Jan 2020 00:50:40 +1000 (AEST) Received: from mail-qk1-f178.google.com (mail-qk1-f178.google.com [209.85.222.178]) by minnie.tuhs.org (Postfix) with ESMTPS id 9F8EE9B842 for ; Sat, 18 Jan 2020 00:50:36 +1000 (AEST) Received: by mail-qk1-f178.google.com with SMTP id z14so22884200qkg.9 for ; Fri, 17 Jan 2020 06:50:36 -0800 (PST) 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=AogAqhIFA2rZOzplKZMngIGVjfFG8lXd2Xd1jKYmnP0=; b=H7BzeKJPhnn4GZA4EdgCZMEVczYf8blhxGp7xJcY8BgfhtnVKK7Eh156c9D0p5oZ8s fB1fnn2tM8ZiZj31DE/7oAQ10AdSZryBHNB+uBgoXC56iOUdUm1Bv57AXbol/5yPkH9+ qQqoLe5gbtQBqksE5s15B9rRiFMRRjVGFJgsA= 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=AogAqhIFA2rZOzplKZMngIGVjfFG8lXd2Xd1jKYmnP0=; b=dJd8HUGd2nTV/vp+pj66kqdt+97JSPnMve6PIpoi6CwBG2ZtBK2oWbPyo2B4kqiM8Q 87x2oSLyF4/AuOAwkomFONyvwQ3DAeACIePEQw99nC6Df4DSfI96pb2M0qdSMfd+Na4H oq8s7Ho+kWc+r1jUG3fsnDixspCNaDfNGGZ4YGEfJfl7nZO/dmv8zD4QRSU3tL6Ky7eV 65t+IvizkVMA6ClB0kbYEsa4ut5JVTdeUqxkJDTlvTHiJ/f+9X8E2/y46QnECIZCMBfA 94iulgoseRvyYNwng7emVb1QzDWfGugBLQz0hGvFNkf1Dkep8xzrgVpscEfJXkSJ/mpt sW5A== X-Gm-Message-State: APjAAAW1ICelPWp80mBKp4Sn15KC0rWyFBu9ujSXYXbqr2ybihjc0QXO b5HRKwaf1s1SQvG3WUTyE9hp2M1SOXZTkr/0jYhXQg== X-Google-Smtp-Source: APXvYqz9c0sSlkAos25ilsBQVjix+eh4YyLuTd/PVElOwZB/hyaBathYUZ6l6BJPkLhHwifPxDQV+0nu5daxjvhxXQY= X-Received: by 2002:a37:48f:: with SMTP id 137mr38564965qke.25.1579272635359; Fri, 17 Jan 2020 06:50:35 -0800 (PST) MIME-Version: 1.0 References: <202001171431.00HEV3gF020029@tahoe.cs.Dartmouth.EDU> In-Reply-To: <202001171431.00HEV3gF020029@tahoe.cs.Dartmouth.EDU> From: Clem Cole Date: Fri, 17 Jan 2020 09:50:24 -0500 Message-ID: To: Doug McIlroy Content-Type: multipart/alternative; boundary="0000000000006f3953059c571004" Subject: Re: [TUHS] Lions book 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: tuhs@tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --0000000000006f3953059c571004 Content-Type: text/plain; charset="UTF-8" Indeed!! FWIW I continue recommend it young hackers to read/examine/study before they try to open something like the current Linux kernel. The MIT xv6 work to put it on an Intel Architecture just adds to the value. As the recent thread/argument on the merits/demerits of the use/abuse of the preprocessor shows - simple and straightforward is easier to understand regardless of the arguments wrt how helpful the macros can be. 6th Edition is clear and if you want to understand what it takes and how it works, John's commentary it difficult to be. On Fri, Jan 17, 2020 at 9:32 AM Doug McIlroy wrote: > I learned from Marianne Lions that she's still receiving > royalties from John's book. What a testimonial to both > John and the system! > > Doug > -- Sent from a handheld expect more typos than usual --0000000000006f3953059c571004 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Indeed!!=C2=A0


FWIW I continue recommend i= t young hackers to read/examine/study before they try to open something lik= e the current Linux kernel.=C2=A0 The MIT xv6 work =C2=A0to put it on an In= tel Architecture just adds to the value.

<= div dir=3D"auto">As the recent thread/argument on the merits/demerits of th= e use/abuse of the preprocessor shows - simple and straightforward is easie= r to understand regardless of the arguments wrt how helpful the macros can = be. =C2=A0=C2=A0

6th Edi= tion is clear and if you want to understand what it takes and how it works,= John's commentary it difficult to be.

On Fri, Jan 17, 2020 at 9:32= AM Doug McIlroy <doug@cs.dartm= outh.edu> wrote:
I learned f= rom Marianne Lions that she's still receiving
royalties from John's book. What a testimonial to both
John and the system!

Doug
--
Sent from a handheld expect more typos t= han usual
--0000000000006f3953059c571004--