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PowerShell 7 Workshop

PowerShell 7 Workshop

By : Nick Parlow
3.7 (3)
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PowerShell 7 Workshop

PowerShell 7 Workshop

3.7 (3)
By: Nick Parlow

Overview of this book

Discover the capabilities of PowerShell 7 for your everyday tasks with this carefully paced tutorial that will help you master this versatile programming language. The first set of chapters will show you where to find and how to install the latest version of PowerShell, providing insights into the distinctive features that set PowerShell apart from other languages. You’ll then learn essential programming concepts such as variables and control flow, progressing to their applications. As you advance, you’ll work with files and APIs, writing scripts, functions, and modules. You’ll also gain proficiency in securing your PowerShell environment before venturing into different operating systems. Enriched with detailed practical examples tailored for Windows, Linux, macOS, and Raspberry Pi, each chapter weaves real-world scenarios to ignite your imagination and cement the principles you learn. You’ll be able to reinforce your understanding through self-assessment questions and delve deeper into the principles using comprehensive reading lists. By the end of this book, you’ll have the confidence to use PowerShell for physical computing and writing scripts for Windows administration.
Table of Contents (23 chapters)
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1
Part 1: PowerShell Fundamentals
9
Part 2: Scripting and Toolmaking
15
Part 3: Using PowerShell

Error Handling – Oh No! It’s Gone Wrong!

There are, broadly, two types of problems that we encounter when using PowerShell: problems that our code encounters and problems with our code. The first type may be as simple as a FileNotFound message in response to Get-ChildItem. The second type can be much harder to understand, as it may involve problems related to scope, which we saw in Chapter 9, Don’t Repeat Yourself – Functions and Scriptblocks, or an unexpected divide by zero error. We’ll deal with problems that our code encounters in the first half of this chapter, and then move on to problems we may find in our code in the second half.

We’ll start by defining what an error is and look at the two types of errors our code will encounter: terminating and non-terminating errors. We will explore how PowerShell deals with both types, how we can change that behavior, and why we might want to. We will then move on to how we can catch errors so...

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