From: wkt@tuhs.org (Warren Toomey)
Subject: [TUHS] Early UNIX file permission oddity
Date: Wed, 21 May 2008 21:20:53 +1000 [thread overview]
Message-ID: <20080521112053.GA44285@minnie.tuhs.org> (raw)
In-Reply-To: <20080521110851.GG14184@mercury.ccil.org>
On Wed, May 21, 2008 at 07:08:51AM -0400, John Cowan wrote:
> It's important to remember that 1st, 2nd, 3rd, ... represent editions of
> the *manual*, and that there is no guarantee that any particular
> snapshot of the system corresponds exactly to what was in any particular
> manual edition. Research Unix (as it was later called retrospectively)
> was right up to the end a continuously evolving system, and the whole
> concept of releases simply did not exist for it.
> So when the CACM article was written, it probably specified what the
> kernel was doing that particular day, without reference to any edition.
Yes, exactly right. That's always in the back of my mind, so sometimes I
forget to make it explicit. What I should have said that the CACM paper
possibly indicates that UNIX went through the stages:
"rwrw" + "x" ==> "rwxrwx" ==> "rwxrwxrwx"
sometime between the points in time known as 3rd and 4th Editions.
Thanks John,
Warren
next prev parent reply other threads:[~2008-05-21 11:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-21 4:32 Warren Toomey
2008-05-21 6:15 ` Wilko Bulte
2008-05-21 11:08 ` John Cowan
2008-05-21 11:20 ` Warren Toomey [this message]
2008-05-21 11:50 ` John Cowan
2008-05-21 21:39 ` Tim Newsham
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