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=HEADER_FROM_DIFFERENT_DOMAINS, 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 cd084dff for ; Fri, 13 Sep 2019 08:01:03 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 5BF7F9B9B1; Fri, 13 Sep 2019 18:01:02 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id C73499B900; Fri, 13 Sep 2019 18:00:47 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id BFC1A9B900; Fri, 13 Sep 2019 18:00:45 +1000 (AEST) Received: from vtr.rulingia.com (vtr.rulingia.com [45.77.232.82]) by minnie.tuhs.org (Postfix) with ESMTPS id 267119B8FB for ; Fri, 13 Sep 2019 18:00:44 +1000 (AEST) Received: from server.rulingia.com (ppp239-208.static.internode.on.net [59.167.239.208]) by vtr.rulingia.com (8.15.2/8.15.2) with ESMTPS id x8D80EAY064788 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Sep 2019 18:00:20 +1000 (AEST) (envelope-from peter@rulingia.com) X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.15.2/8.15.2) with ESMTPS id x8D809rP010400 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 13 Sep 2019 18:00:09 +1000 (AEST) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.15.2/8.15.2/Submit) id x8D809N8010399; Fri, 13 Sep 2019 18:00:09 +1000 (AEST) (envelope-from peter) Date: Fri, 13 Sep 2019 18:00:09 +1000 From: Peter Jeremy To: Dave Horsfall Message-ID: <20190913080009.GG88690@server.rulingia.com> References: <20190911181101.GF3143@mcvoy.com> <20190912034346.GJ2046@mcvoy.com> <20190912043145.GA12480@mcvoy.com> <20190913041117.GR2046@mcvoy.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="/04w6evG8XlLl3ft" Content-Disposition: inline In-Reply-To: X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.12.1 (2019-06-15) Subject: Re: [TUHS] [SPAM] Re: SCCS 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" --/04w6evG8XlLl3ft Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2019-Sep-13 15:54:32 +1000, Dave Horsfall wrote: >On Thu, 12 Sep 2019, Larry McVoy wrote: >> But here is an SCCS win. SCCS has a 16 bit ignore the carry bit=20 >> checksum over the whole file. RCS has none of that. > >Giggle... I found I could actually *edit* an SCCS file, provided I reset= =20 >the checksum to zero (it was then recalculated). I think that was deliberate. ISTR editing SCCS files and repairing the checksum as well, though I don't recally exactly how. >> B) NFS errors. So all NFS implementations, Suns included, had a bad=20 >> habit of returning a block of nulls. I dunno why but that is a thing.= =20 >> The SCCS checksum would detect that. RCS and CVS did not have a=20 >> checksum so when NFS returned garbage, they were happy to return that to= =20 >> you. > >I believe that NFS is much more reliable now (yes, it used to be awful). NFS ran much faster when you turned off the UDP checksums as well. (Though there was still the Ethernet CRC32). --=20 Peter Jeremy --/04w6evG8XlLl3ft Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE7rKYbDBnHnTmXCJ+FqWXoOSiCzQFAl17THxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEVF QjI5ODZDMzA2NzFFNzRFNjVDMjI3RTE2QTU5N0EwRTRBMjBCMzQACgkQFqWXoOSi CzTpYw/9G0LDUT5IAHOzM0dG8bJEQSgO5+8PmiUcgXIWDqzq8vfHqEE3/KQo1fe+ Aei3Ks/H3rMJJSAA5jgyyxbchN6KY7OqMJyxQgUf+cMRcK69ufQR1QWvpfkeLyVe BeZmmSPx2tymqJEMDdj2Po/xq7AAJQgCCB68mVJrGHKW2/UVoWQt/wBt+7/7kx9V psa5mNLJn/fF2d2aZwqLtZU2KMm5tAhLUu9y2npkCEQcsvqi33evG+m6xJV9iyBG 4JGK/If25r9hrkWYe3/xyf+5komedw72/rNAtAKsjotcDD6qeNVX5z7ymzKjI4N0 IZfXBgG1iYcI4qowK+8EQ2o2AOfXyvAKudU8ZGpl+GM6z4+MC1VCKr1N4lKzkply T9W7mBi0zz8wMeKaiewmW5XauhSZh7AaIrK+Om8++xY7erY6qmnZ1rd/rY/mBN7Z S6QrvzwT5aeI0d1v7cfV3CARvQVeFjPMpoFhzeVO0HoofKm1p8D0K5D0Jd/DokEd VvvavmFWDuvxbmlasfIzTDD+d+IntE4BoEjCGD1LasWRTMW+8dorBQzfHenK9uC0 hbB3mfBTXrmTdD8FmyXFYSP3BVqRgxqv/h0pkYaLsLNqIC7EgBrCqD4BLEL6vkBn q7tsTDMudy+XsyykpKpvldn3cz5337B0KNiiLFbdbbodTAjkvTY= =HdsB -----END PGP SIGNATURE----- --/04w6evG8XlLl3ft--