The output will be what you expect, it will echo Hello World onto the screen. You can also use echo to view the contents of a variable: As with most Linux commands, there's definitely more that we can ...

It's easy to add a few lines of text to files on Linux, but there are tools that make it easier to add many lines. There are a number of ways to add text to files on Linux systems without having to ...

Here are some warm-up exercises for anyone just starting to use the Linux command line. Warning: It can be addictive. If you’re new to Linux or have simply never bothered to explore the command line, ...

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 ...