From mboxrd@z Thu Jan 1 00:00:00 1970 From: cowan@mercury.ccil.org (John Cowan) Date: Mon, 21 Mar 2016 08:06:34 -0400 Subject: [TUHS] Early non-Unix filesystems? In-Reply-To: References: <20160318004832.GA18245@minnie.tuhs.org> <20160318084234.GB64087@server.rulingia.com> <24e7ae828a0086db2f79ea66165b80bf.squirrel@webmail.yaccman.com> <1458323139.767071.553262498.2A8E1982@webmail.messagingengine.com> Message-ID: <20160321120634.GK15457@mercury.ccil.org> Tony Finch scripsit: > I was slightly startled by the coolness of the idea when I found out that > nvi uses Berkeley DB as its storage layer; its recno access method > makes a text file look like a random-access array of strings. Classical sequential files, however, were simply random-access files such that seeking to line n was just a matter of seeking to byte n * MAXCHARSLINE. The last time I actually used such a thing was on an early Tandem system when I was implementing the Software Tools. Editable source used a different format, so I set things up so that the Tools could either read source format or sequential format and then wrote sequential format. -- John Cowan http://www.ccil.org/~cowan cowan at ccil.org At the end of the Metatarsal Age, the dinosaurs abruptly vanished. The theory that a single catastrophic event may have been responsible has been strengthened by the recent discovery of a worldwide layer of whipped cream marking the Creosote-Tutelary boundary. --Science Made Stupid