How to Extract/Unrar a File from an Incomplete Rar File

So you've a rar file which is about 99% complete but you can't find the 1% and aren't bothered about missing it - however you can't extract the file. What you need is to extract the archive while keeping the broken file. This can be done with a simple command line prompt:

unrar x -kb (path to file)

The broken file should then appear in your home directory.