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- From: seismo!hadron!jsdy@sally.utexas.edu (Joseph S. D. Yao)
- Cc: jsdy@sally.utexas.edu
- Date: Tue, 4 Nov 86 21:16:04 est
-
- >From: @SUMEX-AIM.ARPA:MRC@PANDA (Mark Crispin)
- >Date: Mon 20 Oct 86 05:42:50-PDT
- > On the DEC-20 and Unix file servers, it's single case and hyphens.
- >I end up using something like "tokyo-paper.first-draft".
-
- This sounds like a local convention. Unix filenames may contain
- any ASCII character, including upper and lower cases, except for
- NUL and '/'.
-
- >nobody uses mixed case on our Unix-based file server. The Leaf (Xerox
- >Lisp machine file access protocol) server on Unix was modified to coerce
- >all filenames to be entirely lowercase on the Unix machine's disk and to
- >coerce it back to all uppercase in the other direction. There were/are
- >two reasons:
- > (1) transfers to/from the third file server, a DEC-20, were hopeless
- > otherwise since the Unix system would insist that two identical files
- > were different because the case of the names didn't match
- > (2) the users found the case dependence to be a serious problem.
-
- We now see the source of the discrepancy. (2) obviously came first:
- people who were used to the older (I did NOT say antique ;-) ) file
- system on the 20's, and wanted not to worry about filename conversion,
- tried to make the restrictions on Unix file names a combination of
- the DEC-20's and what they PERCEIVED as the Unix conventions. This
- indubitably has caused further consternation among people familiar
- with one or the other but not both systems.
-
- The Leaf server apparently gives this version of Unix a modified file
- system with an attempt at monocase restriction. I have no idea how
- prevalent it is, but my off-hand observation is "not very." I don't
- think arguments based on what it does can be very compelling.
- --
-
- Joe Yao hadron!jsdy@seismo.{CSS.GOV,ARPA,UUCP}
- jsdy@hadron.COM (not yet domainised)
-
- Volume-Number: Volume 8, Number 38
-
-