[CentOS] Local mirroring of the CentOS repos

I figured I try if I can mirror the base and updates repos locally. 
There's no tutorial for that, only one about creating your own repo of 
packages which is not the same. So, I just mirrored all the stuff with 
wget and changed the baseurl in the repo files and hoped that's enough. 
Works. So easy you don't need a tutorial. 
*But* I then realized that the updates directory contains *all* updates, 
not just the latest. Which means if I don't regularly check I may get old 
versions mirrored I don't want. It also means that I get a lot of unwanted 
files at the time I start to mirror. And I cannot delete old files as 
these would again be mirrored in.
An obvious solution would be to check each day and tell wget (or whatever 
software I use) to ignore files older than 24 hours. Still, this means the 
initial download has to get them all and I have to delete all unwanted old 
files manually.
Is there a better solution?

Kai

-- 
Kai Schätzl, Berlin, Germany
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