I doubt that there is any satisfactory solution to the problem you have posted. The restriction has nothing to do with perl, but rather, your operating system. Perhaps, if you would tell us about the problem that appears to need this operation, we could provide a working solution to that problem.
Bill

In reply to Re: Fastest way of changing the beginning of a txt file.. by BillKSmith
in thread Fastest way of changing the beginning of a txt file.. by pedrete

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