This course will take you through the complexity of using sed and awk, showing you how easy these can be with a little practice. Starting with grep, we use the tool to learn the art of regular expressions. With these basics, we move on to the practical use of sed and awk. The course culminates in a discussion about working with web access log files of 30,000 lines or more, and shows how to create your own log analysis tool. The examples are based around the practical needs of a both a hypothetical company and potential real-life problems.