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=-2.9 required=5.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=unavailable autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,bc1361a952ec75ca X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-09-10 02:57:04 PST Path: archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!news.tele.dk!small.news.tele.dk!213.56.195.71!fr.usenet-edu.net!usenet-edu.net!enst!enst.fr!not-for-mail From: "M. A. Alves" Newsgroups: comp.lang.ada Subject: Re: Progress on AdaOS Date: Mon, 10 Sep 2001 10:53:23 +0000 (GMT) Organization: ENST, France Sender: comp.lang.ada-admin@ada.eu.org Message-ID: Reply-To: comp.lang.ada@ada.eu.org NNTP-Posting-Host: marvin.enst.fr Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Trace: avanie.enst.fr 1000115823 36682 137.194.161.2 (10 Sep 2001 09:57:03 GMT) X-Complaints-To: usenet@enst.fr NNTP-Posting-Date: Mon, 10 Sep 2001 09:57:03 +0000 (UTC) To: Return-Path: X-X-Sender: In-Reply-To: Errors-To: comp.lang.ada-admin@ada.eu.org X-BeenThere: comp.lang.ada@ada.eu.org X-Mailman-Version: 2.0.4 Precedence: bulk List-Help: List-Post: List-Subscribe: , List-Id: comp.lang.ada mail<->news gateway List-Unsubscribe: , List-Archive: Errors-To: comp.lang.ada-admin@ada.eu.org X-BeenThere: comp.lang.ada@ada.eu.org Xref: archiver1.google.com comp.lang.ada:12978 Date: 2001-09-10T10:53:23+00:00 On Sun, 9 Sep 2001, David Thompson wrote: > Keith Thompson wrote : > > "M. A. Alves" writes: > ... > > > Ultimately it is an identity problem. UNIX file has key path/filename, so > > > directories must form a tree (not a forest). Dream OS file would have > > > another key scheme, perhaps OID (Object Identifier) (= UNIX inode?). > > > > Actually, a UNIX file system isn't necessarily a strict tree. Two > > different directories can contain links to the same file. (It's > > usually kept to a mostly tree-like structure simply to avoid > > confusion.) > > > Don't have to be different directories -- common example, > /usr/local/bin/{gzip,gunzip,gzcat} are hardlinks to one file -- > but do have to be on the same filesystem = usually partition. > > If you (have and) count symbolic links, can have multiple paths > to a directory (or special file) and across filesystems as well. But still not a forest [the original claim], because you must have exactly one root. -- , M A R I O data miner, LIACC, room 221 tel 351+226078830, ext 121 A M A D O Rua Campo Alegre, 823 fax 351+226003654 A L V E S P-4150 PORTO, Portugal mob 351+939354002