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HOW-TO Extract Lines from File A that Contains Words in File B?

Discussion in 'BlackHat Lounge' started by TrailBlazer, Jan 3, 2015.

  1. TrailBlazer

    TrailBlazer Junior Member

    Aug 11, 2012
    Likes Received:
    I have a large text file, over 1gb large containing data line by line. This is text file A.txt

    I then have the second file, text file B.txt that contains 30,000 unique words that I want to extract from text file A, along with the rest of the line where the word is found in text file A.

    An example of this is:

    --Text File A--

    dog in house
    cat at school
    kid in playground
    tom at oaks
    so much stuff
    inhouse cool stuff

    --Text File B--


    --Result File Output--

    dog in house
    tom at oaks
    inhouse cool stuff

    How would I go about doing this that would work the fastest way possible? Is there any software on the market for purchase that specializes in this type of task?
  2. divok

    divok Senior Member

    Jul 21, 2010
    Likes Received:
    you would need a custom script for this.
    you could do this in npp easily but I doubt that with size of your files .

    let me know If you can't find a solution , i might help you out with a python script.