An ugly solution I can think of is breaking up the file into smaller Overlapping sub-parts that will fit into memory. Read in the smaller sections of the file into an array and then pick out the array that is in one but not the other. Note the arrays that are missing in the last thousand lines to make sure they don't show up in the next sub-part.

In reply to Re: Re: Re: Comparing Large Files by Anonymous Monk
in thread Comparing Large Files by Anonymous Monk

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