The case statement in the bash shell provides an interesting and easy alternative to the more complex if statements. They represent the simplest form of the kind of logic that evaluates multiple ...

Many bash scripts use arguments to control the commands that they will run and the information that will be provided to the people running them. This post examines a number of ways that you can verify ...

In our first tutorial on command line wizardry, we covered simple redirection and the basics of sed, awk, and grep. Today, we’re going to introduce the concepts of simple variable substitution and ...