Thanks, Evan Carroll, I found some interest thing in MD5. I try ren file : bigfile.zip (over 200MB) to bigfile.txt , then type echo a >> bigfile.txt, i found MD5 hash value does not change after append "a" in it~ I feel weird in this case, although this is not related to perl topic. ^^"

In reply to Re^2: Monitor directories or files have any change by benlaw
in thread Monitor directories or files have any change by benlaw

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