Anyone know of a quick and easy way to find the date of the newest file in a directory tree.
I'm looking for a way to speed up synchronizing file caches between machines. When you have 1m in files (that's a count, not a size), it takes quite a while to scan through the whole tree. If we had a .oldest file in each branch, we could skip that branch if nothing had changed. Then all we would need to do is scan the tree once to set these branch-stamps. After that, all the cache machines would have to do is walk the tree looking for newer stamps.
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