In message <[EMAIL PROTECTED]>, Bill Pechter write
s:
>> Date: Thu, 25 May 2000 09:42:51 -0700 (PDT)
>> From: "Duane H. Hesser" <[EMAIL PROTECTED]>
>> 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.

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
[EMAIL PROTECTED]         | TCP/IP since RFC 956
FreeBSD coreteam member | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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