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how to filter this file? any software?

Discussion in 'Black Hat SEO' started by walker, Apr 28, 2011.

  1. walker

    walker Junior Member

    Feb 19, 2009
    Likes Received:
    I have a file A, say has 1000 lines, each line is a url. another file B, has 600 lines, each line is a url. now, I want to filter all urls in file B that are already in file A, so, in file B, it only has lines that are not in file A.

    any simple way to do this? software?