From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: from minnie.tuhs.org (minnie.tuhs.org [IPv6:2600:3c01:e000:146::1]) by inbox.vuxu.org (Postfix) with ESMTP id ECC71200C5 for ; Tue, 18 Jun 2024 23:15:55 +0200 (CEST) Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 5881543168; Wed, 19 Jun 2024 07:15:51 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuhs.org; s=dkim; t=1718745351; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-owner:list-unsubscribe:list-subscribe:list-post; bh=c/vvRQRD10Uud3i2IBDil1KPMLA6kYDT2CTNMd8dGMY=; b=JCECK+xTXbPZjcPc0aFRRgPJalWukVgEMQDdROoaM/zEKy00y2G4GY0fibEtdz7ZsdskZr whuwN2lyAOJnFj/Gf3i8g9CsjdY/X4stu+A2i1QQvV8wObTXiH6+OCWHPGj3yt5zEzXXwI 6jlrr4Vx3pbTfq0uXJszWXWfjIGxzDg= Received: from mail-43167.protonmail.ch (mail-43167.protonmail.ch [185.70.43.167]) by minnie.tuhs.org (Postfix) with ESMTPS id 097B942A95 for ; Wed, 19 Jun 2024 07:15:39 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1718745336; x=1719004536; bh=c/vvRQRD10Uud3i2IBDil1KPMLA6kYDT2CTNMd8dGMY=; h=Date:To:From:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=YoM1S4I1/Nn8syoSQyIzBIuWlqvMFrrR16mB/zHz8ulDaaIzIWsms3RH3v5Ex3JVI BRtTsQBVIvoMQAtYvIGkOgfD3vSAUj2MZh5p9duEFwAlCkGA2I6FTpmILJBLSHL6Ew SyKOWDsLAzGILvB46+judoqLdLWOo+Ioe/U6xVjR/oJr2Ko3phDBcBTzBD3drIDoX7 T64ya/55LMHAio1wrB/y7ACJhuZVCQ2xtIoGeshVUKHDBxI072omg7Uci96kfPKnQE ah7VlnsD8aSq89TkY8CnvBruMAOlB0QSxKFX77mNUTsD9yPsbMvKtU7KiQ0f8SvNWg eJm9JGM5+EteA== Date: Tue, 18 Jun 2024 21:15:32 +0000 To: The Eunuchs Hysterical Society Message-ID: In-Reply-To: References: Feedback-ID: 35591162:user:proton X-Pm-Message-ID: 147e20d48fe7755248ed8ab238878b74b3d80184 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: SRWJKSDCNCZXMRZWP2OQRLW22QRE4C46 X-Message-ID-Hash: SRWJKSDCNCZXMRZWP2OQRLW22QRE4C46 X-MailFrom: segaloco@protonmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: ACM Software System Award to Andrew S. Tanenbaum for MINIX List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: segaloco via TUHS Reply-To: segaloco On Tuesday, June 18th, 2024 at 1:59 PM, Dave Horsfall w= rote: > On Tue, 18 Jun 2024, segaloco via TUHS wrote: >=20 > > I have Andy Tanenbaum to thank in part for my interest in turning up > > UNIX 4.0 information due to the quote: > >=20 > > "Whatever happened to System IV is one of the great unsolved mysteries > > of computer science." > >=20 > > From Modern Operating Systems. I took this as an impudent challenge and > > well here I am. >=20 >=20 > Well, don't keep us in suspense; what happened to SysIV? Not that I'm a > fan of either SysIII or SysV... >=20 > -- Dave It has left its droppings out there in the world, some of which were held o= nto by Arnold Robbins: https://www.tuhs.org/Archive/Documentation/Manuals/U= nix_4.0/ And others found by myself on eBay and reconstructed: https://gitlab.com/se= galoco/pwb4u_man The story I've gotten is AT&T policy was to release odd-numbered versions, = so PWB 1.0, System III, and System V made it out into the world, PWB 2.0 an= d Release 4.0 stayed in the labs. In the most technical sense, System IV n= ever existed, what could've become it remained a Bell System-only issue. - Matt G.