"Today, we're going to look at a few ways we can use grep to clean up our shell scripting and make it look (and, most of the time, actually "be") more efficient. The solutions presented in this post can be one-upped by any number of other standard Unix/Linux commands, but (for the sake of this post) we're going to assume that "grep" is the be-all-end-all of input and output processing. Suspend your disbelief, for as long as it takes to read this post, and assume that the world is flat, grep's it and that's that."
