This post should enable anyone to get Linux up and running and crack a WEP key. It took me about 2 days and myriad tutorials to finally get this to work, and now that I have I feel that I should share it with everyone.
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I am by no means a Linux expert, but this works regardless. All you need is a old laptop with a wireless card and a copy of Ubuntu Linux, currently one of the most popular and easily installed distributions of linux. If you havent already bought a wireless card, you should select one from this list to save yourself some trouble.