From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,bde6706c124e6eed X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news4.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!wn13feed!worldnet.att.net!bgtnsc05-news.ops.worldnet.att.net.POSTED!53ab2750!not-for-mail From: Dave Thompson Newsgroups: comp.lang.ada Subject: Re: Filenames in Ada Message-ID: <992vp1pv50m3oqoliarp0s5lbi23n9otih@4ax.com> References: <1653090.31FM62oI6I@linux1.krischik.com> <1255659.7PSTQaQJvX@linux1.krischik.com> <1839239.KAMAmvIqvL@linux1.krischik.com> X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Wed, 14 Dec 2005 06:59:38 GMT NNTP-Posting-Host: 12.76.8.20 X-Complaints-To: abuse@worldnet.att.net X-Trace: bgtnsc05-news.ops.worldnet.att.net 1134543578 12.76.8.20 (Wed, 14 Dec 2005 06:59:38 GMT) NNTP-Posting-Date: Wed, 14 Dec 2005 06:59:38 GMT Organization: AT&T Worldnet Xref: g2news1.google.com comp.lang.ada:6878 Date: 2005-12-14T06:59:38+00:00 List-Id: On Thu, 01 Dec 2005 07:59:45 +0100, Martin Krischik wrote: > Well, Windows is full of Hacks as well. An so is Unix. Just yesterday I read > that the "Uni" in Unix stands for "single user". Originally Unix was a > scaled down single user alternative to "Multrix". Well that explains a lot. Multics, the Multiplexed Information and Computing Service. See www.multicians.org for (much!) more. Not single user -- even the very first, internal Bell Labs systems had multiple concurrent users -- but small numbers of users: then perhaps 2-10 on a minicomputer, today typically 10s to 100s (real users e.g. shell not say HTTP requesters, which could be hugely more), compared to the big-iron mainframe timesharing systems of the day which were 100s to many 1000s. > Indeed there is only one real user on Unix - the user with the ID 0. > What do you mean "real"? There is only one superuser id, or equivalently all system/manager privileges/roles are combined into one userid, which is certainly a limitation that is sometimes a problem. But Unix does (or perhaps Unices do, since there are now a range of them) support multiple "ordinary" users pretty well. If competently administered, which many personal (Linux etc.) systems aren't. - David.Thompson1 at worldnet.att.net