Need a very simple script.

Hello, I have 10,000 urls, half of the page contain a keyword.I want to get all the pages that contain a keyword. Software will go to each page, it will check if a keyword is present, if present, it will save those urls. Very simple task. It will be better if you can do in imacros, but it's also ok if you code in other [login to view URL] language is ok, as long as it does the [login to view URL] I don't want to run it from command line, I want a desktop software or an imacros script. I have low budget.I will choose the coder who can do it for lowest price. Thanks, Happy bidding.