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From: frank@zen.UUCP
Newsgroups: comp.unix.wizards
Subject: Re: Symbolic Links
Message-ID: <637@zen.UUCP>
Date: Sat, 5-Sep-87 18:09:57 EDT
Article-I.D.: zen.637
Posted: Sat Sep  5 18:09:57 1987
Date-Received: Tue, 8-Sep-87 01:27:18 EDT
References: <1254@mhres.mh.nl> <16294@teknowledge-vaxc.ARPA>
Reply-To: frank@zen.UUCP (Frank Wales)
Organization: Zengrange Limited, Leeds, England
Lines: 22
Keywords: HP-UX, 300, 500, 800
Summary: HP-UX supports different file systems

In article <16294@teknowledge-vaxc.ARPA> mkhaw@teknowledge-vaxc.ARPA (Mike Khaw) writes:
>in article <1254@mhres.mh.nl>, jv@mhres.mh.nl (Johan Vromans) says:
>-> Imagine, my system (HP9000/530 with HP-UX, a very good System V.2 with
>-> Berkeley enhancements) does not have "." and "..":
>
>That's funny, we have an HP9000/320 and two HP9000/350s running HP-UX
>and all 3 have . and ..
>Mike Khaw

HP-UX has a different file system implementations on the series 500 from
those on the 300 and 800 series.  At the time 500 series first came out
(1983), HP (I am informed) didn't rate either the Bell or BSD file systems
for reliability, so they implemented their SDF (Structured Directory Format)
as the 500 series file system.  Later improvements have meant that HP turned
to a version of the McCusick/BSD High Performance file system for first the
300 series, and now the 800 series.  The point being that the former does
not use "." and ".." files, while the latter two do.  

At the moment, no implementation of HP-UX supports symbolic links.

Frank Wales,                        [frank@zen.uucp<->mcvax!zen.co.uk!frank]
Zengrange Ltd, Greenfield Rd, Leeds, ENGLAND, LS9 8DB.      (+44) 532 489048