Date: Wed, 31 May 2000 00:11:44 +0100 From: Brian Somers <brian@Awfulhak.org> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: bpechter@shell.monmouth.com, freebsd-hackers@FreeBSD.ORG, dhh@androcles.com, brian@hak.lan.Awfulhak.org Subject: Re: Linux and FreeBSD dual universe Message-ID: <200005302311.AAA27626@hak.lan.Awfulhak.org> In-Reply-To: Message from Poul-Henning Kamp <phk@critter.freebsd.dk> of "Sun, 28 May 2000 16:47:29 %2B0200." <21049.959525249@critter.freebsd.dk>
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> In message <200005281042.GAA54833@bg-tc-ppp32.monmouth.com>, Bill Pechter write
> s:
> >> Date: Thu, 25 May 2000 09:42:51 -0700 (PDT)
> >> From: "Duane H. Hesser" <dhh@androcles.com>
> >> Subject: Re: FreeBSD kernel as a replacement for Linux kernel
> >>
> >> Anyone remember the old Pyramid OSX 'universe' command?
> >>
> >> command like "att ls", or even "att cc ....". The universe was
> >> marked by a flag which affected the interpretation of "conditional
> >> symbolic links". A separate syscall was available to create
>
> It did nøt use variant symbolic links, it used a namei hack.
>
> If you had a directory containing:
> .
> ..
> .ucbfoo
> .attfoo
> bar
>
> and you were in universe "ucb" you would see:
> .
> foo
> bar
>
> where "foo" would take you to ".ucbfoo"
>
> it was that simple.
I believe it was Sequent's ``Dynix'' that had the flag-dependent
symbolic links. Sysv in those days didn't do symlinks at all !
> --
> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
> phk@FreeBSD.ORG | TCP/IP since RFC 956
> FreeBSD coreteam member | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
--
Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org>
<http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !
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