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in reply to Re: Monitor directories or files have any change
in thread Monitor directories or files have any change
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. ^^" |
Re^3: Monitor directories or files have any change
by BrowserUk (Patriarch) on Oct 28, 2005 at 02:07 UTC
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That's probably because there is a ctrl-Z (ascii 26) somewhere in the zip file. When you renamed it to .txt, it got treated as a non-binary file and only the contents upto the (first) ctrl-Z got processed. When you appended an 'a' to it an ran it again, the same thing happened. Only the first part of the data to the first ^Z was processed. Hence the md5 didn't change.
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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