In such circumstances, I'd probably use split(1) (i.e. the Unix tool, not the Perl function).

split -l 10000 big_file to split into 10000-record files.

split -b 10000 big_file to split into 10000-byte files.

It would probably be faster too. (But ++ all the same (thinking of Windows)).

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In reply to Re: Chunk large data/log files into more manageable pieces (split(1)) by grinder
in thread Chunk large data/log files into more manageable pieces by ChemBoy

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