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!news3.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!newsfeed00.sul.t-online.de!t-online.de!130.59.10.21.MISMATCH!kanaga.switch.ch!ezmp3.switch.ch!news-zh.switch.ch!switch.ch!news.hispeed.ch!linux2.krischik.com!news From: Martin Krischik Newsgroups: comp.lang.ada Subject: Re: Filenames in Ada Date: Thu, 15 Dec 2005 21:23:04 +0100 Organization: Cablecom Newsserver Message-ID: <1993143.vyPih64Mhk@linux1.krischik.com> References: <1653090.31FM62oI6I@linux1.krischik.com> <1255659.7PSTQaQJvX@linux1.krischik.com> <1839239.KAMAmvIqvL@linux1.krischik.com> <992vp1pv50m3oqoliarp0s5lbi23n9otih@4ax.com> NNTP-Posting-Host: 80-218-112-22.dclient.hispeed.ch Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit X-Trace: news.hispeed.ch 1134754233 3147 80.218.112.22 (16 Dec 2005 17:30:33 GMT) X-Complaints-To: news@hispeed.ch NNTP-Posting-Date: Fri, 16 Dec 2005 17:30:33 +0000 (UTC) User-Agent: KNode/0.10 Xref: g2news1.google.com comp.lang.ada:6900 Date: 2005-12-15T21:23:04+01:00 List-Id: Dave Thompson wrote: > 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. big-iron machines normally need more then one superuser - sometimes some of them might want a holiday. May be not every superuser need all the superpowers. I permanently have a root console open on my system and when I use a Linux system where I don't have the root password I feel like a cripple. I don't feel that way on VMS - there is a SET PRIVILEGE command there. Martin -- mailto://krischik@users.sourceforge.net Ada programming at: http://ada.krischik.com