In this chapter, we will finally start writing shell scripts. After writing and running our very own Hello World! script, we will look at some best practices for all future scripts. We will use many techniques to increase the readability of our scripts, and we will follow the KISS principle (Keep It Simple, Stupid) where possible.

The following commands will be introduced in this chapter: head, tail, and wget.

The following topics will be covered in this chapter:

• First steps
• Readability
• KISS