One CAUTION: I don't think the command line utility split exists on all OS's (e.g., I'm not aware of it on MS OSs).
That depends what you mean by "existing". If you mean, "split" isn't available after installing MS OSses, you are probably right. But last time I looked, Perl didn't come with those OSses either. OTOH, I'd be extremely surprised if there wasn't a Windows port for split. All common Unix tools have been ported to Windows.

In reply to Re^3: divide the large files to small by JavaFan
in thread divide the large files to small by Anonymous Monk

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