You use very confusing terminology, mixing "record", "line" and "block". Assuming that you consider "unit of work" boundary to be between a "block" 5 and a "block" 1, then why not simply use seek to seek to a position roughly ($file_size / $number_of_files) * $this_file and read forward until you've encountered one "block" 5? After that, the current set of "unit of work" starts.

In reply to Re: Splitting a Blocked file in Round Robin into smaller files by Corion
in thread Splitting a Blocked file in Round Robin into smaller files by tradersjoe0

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