Do you really expect someone to play guessing games with the output of a command list? Do you expect poor ammalu89 to go away and read the documentation for everyone on the list before piecing together your so called strategy? Seems like you have no interest in either helping the user, backing up your claim that FTP can do this reliably or proving your assertion that comparing the number of bytes is a logical way of comparing files.
Perhaps you want to (re?)read PerlMonks for the Absolute Beginner. Maybe someone should post a "How to answer a question effectively" tutorial.
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