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-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,bc1361a952ec75ca X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-09-08 17:43:20 PST Path: archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!canoe.uoregon.edu!arclight.uoregon.edu!wn4feed!worldnet.att.net!135.173.83.71!wnfilter1!worldnet-localpost!bgtnsc06-news.ops.worldnet.att.net.POSTED!not-for-mail From: "David Thompson" Newsgroups: comp.lang.ada References: Subject: Re: Progress on AdaOS X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 Message-ID: Date: Sun, 09 Sep 2001 00:43:19 GMT NNTP-Posting-Host: 12.89.142.142 X-Complaints-To: abuse@worldnet.att.net X-Trace: bgtnsc06-news.ops.worldnet.att.net 999996199 12.89.142.142 (Sun, 09 Sep 2001 00:43:19 GMT) NNTP-Posting-Date: Sun, 09 Sep 2001 00:43:19 GMT Organization: AT&T Worldnet Xref: archiver1.google.com comp.lang.ada:12933 Date: 2001-09-09T00:43:19+00:00 List-Id: 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. -- - David.Thompson 1 now at worldnet.att.net