Get to know Linux: Using grep

Get to know Linux: Using grep: "If you use Linux long enough, you are going to wind up getting to know (and using) the command line. And if you use the command line long enough, you are going to find yourself using the grep tool. Grep is one of the most useful linux utilities in that it will search WITHIN a text file for a string of characters. Grep is such a useful tool that it is often used in shell scripts and much, much more."