Those other monk's responses notwithstanding (see tye's recursion link for an in-depth discussion) if you did want to go this route (as a learning experience or something) your's is not so bad a stab at it. You might want to look up merlyn's discussions of '.*' (perhaps

my ($parent) = $path =~ /([^\/]*)\//;
[download]

?) and don't you want to check the internal return of my_mkdir()? Hmm, maybe not, save for debug/error msging.

Yoiks! I'm completely backwards here - You want to be greedy. Dang recursion!Forget I mentioned it,... look, out that window, why it's Supermunk! (slinks quietly away to chop onions).

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