[Centos] httpd trademark issue -- here it is!

[Rick Graves]

Michael,

> Clearly, 1 < 2, so the latter is the newer package.

Thanks, I am clear on that.  My code was sometimes not
working right.  I simplified and clarified it, and it
is working right now -- at least on the httpd
versions, and I hope on everything else.

> It's not a straight string compare; if it
> were, 2.0.46 would
> seem to be a higher version than 2.0.127.  

Thanks for the heads up on this point.  My code is not
this sophisticated.  

I am not sure I need to even worry about comparisons
on this level.  My program is most concerned about
when a *different* version appears on the public
mirrors.  So 2.0.46 would be different than 2.0.127,
and my logic presumes the one that appears after
supercedes the one that appeared before.  

At this point, I have not yet tackled removing
obsolete versions.  I leave it up to yum to decide
which is "newer" for its purposes.  Basically, my plan
was to remove a version after it disappears from the
public mirrors, and after it has been superceded by
something that appeared later.  

Thanks for bringing up the point about 2.0.46 vs.
2.0.127; I will want to keep this in mind going
foward.

Rick

--- Michael Jennings <mej at caosity.org> wrote:

> On Saturday, 18 December 2004, at 06:26:26 (-0800),
> Rick Graves wrote:
> 
> > Compare:
> > 
> > httpd-2.0.46-44.ent.centos.1.i386.rpm
> > httpd-2.0.46-44.ent.centos.2.i386.rpm 
> > 
> > By "non-contiguous", I meant that the "1" and "2"
> digits are
> > separated from the main version number, 2.0.46-44.
> 
> The version number is actually "2.0.46," and the
> release is
> "44.ent.centos.1".  If your code isn't catching
> that, it's not doing
> the comparison right.
> 
> I have some perl code and some C code that does
> pretty reliable
> version comparisons, in some cases better than rpm
> does.  Let me know
> if you're interested.  But the basic idea is to
> split the version and
> release into numeric and non-numeric portions and
> compare each one in
> turn.  It's not a straight string compare; if it
> were, 2.0.46 would
> seem to be a higher version than 2.0.127.  Numbers
> are compared
> numerically for that reason.  So the comparison
> becomes this:
> 
> 2 . 0 . 46   44 .ent.centos. 1
> 2 . 0 . 46   44 .ent.centos. 2
> 
> Clearly, 1 < 2, so the latter is the newer package.
> 
> HTH,
> Michael
> 
> -- 
> Michael Jennings (a.k.a. KainX) 
> http://www.kainx.org/  <mej at kainx.org>
> n + 1, Inc., http://www.nplus1.net/       Author,
> Eterm (www.eterm.org)
>
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