Just one other suggestion that nobody's come up with -- is it possible to use some kind of Tie module and treat the lines of the file as an array? 

($_='kkvvttuubbooppuuiiffssqqffssmmiibbddllffss')
 =~y~b-v~a-z~s;                             print

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In reply to Re: breaking up very large text files - windows by Cody Pendant
in thread breaking up very large text files - windows by antichef

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