Since you're just writing them out, perhaps you can use the unix 'split' command? 
# n files each with no more than 10000 lines
split --lines=10000 

# files contaning at most 1 meg
split --bytes=1m

In reply to Re: How do i split a file into given number of parts. by trentonl
in thread How do i split a file into given number of parts. by turumkhan

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