Learn Windows PowerShell in a Month of Lunches, Second Edition

Chapter 22. Improving your parameterized script

In the previous chapter, we left you with a pretty cool script that had been parameterized. The idea of a parameterized script is that someone else can run the script without having to worry about, or have to mess with, its contents. They provide input through a designated interface—parameters—and that’s all they can change. In this chapter, we’re going to take things a bit further.

22.1. Starting point

Just to make sure we’re on the same page, let’s agree to use listing 22.1 as a starting point. This script features comment-based help, two input parameters, and a command that uses those input parameters. We’ve made one minor change since the previous chapter: we changed the output to be selected ...