You're reading from PowerShell 7 Workshop Learn how to program with PowerShell 7 on Windows, Linux, and the Raspberry Pi

Product type Paperback

Published in Feb 2024

Publisher Packt

ISBN-13 9781801812986

Length 468 pages

Edition 1st Edition

Languages

PowerShell

Tools

Linux

Concepts

System Administration

Author (1):

Nick Parlow

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Table of Contents (23) Chapters

Preface

1. Part 1: PowerShell Fundamentals

2. Chapter 1: Introduction to PowerShell 7 – What It Is and How to Get It FREE CHAPTER

3. Chapter 2: Exploring PowerShell Cmdlets and Syntax

4. Chapter 3: The PowerShell Pipeline – How to String Cmdlets Together

5. Chapter 4: PowerShell Variables and Data Structures

6. Chapter 5: PowerShell Control Flow – Conditionals and Loops

7. Chapter 6: PowerShell and Files – Reading, Writing, and Manipulating Data

8. Chapter 7: PowerShell and the Web – HTTP, REST, and JSON

9. Part 2: Scripting and Toolmaking

10. Chapter 8: Writing Our First Script – Turning Simple Cmdlets into Reusable Code

11. Chapter 9: Don’t Repeat Yourself – Functions and Scriptblocks

12. Chapter 10: Error Handling – Oh No! It’s Gone Wrong!

13. Chapter 11: Creating Our First Module

14. Chapter 12: Securing PowerShell

15. Part 3: Using PowerShell

16. Chapter 13: Working with PowerShell 7 and Windows

17. Chapter 14: PowerShell 7 for Linux and macOS

18. Chapter 15: PowerShell 7 and the Raspberry Pi

19. Chapter 16: Working with PowerShell and .NET

20. Answers to Activities and Exercises

21. Index

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22. Other Books You May Enjoy

Writing a script

How do we go about writing a script? Pretty much every script I write from scratch starts with writing down the steps and cmdlets I need to complete a task. Once I can complete the task with only the information in the list, and all the cmdlets work, I know I am ready. Let’s start our script with a working command. As an example, consider the following cmdlet:

Invoke-RestMethod -Uri 'https://api.weatherapi.com/v1/current.json?q=London&aqi=no' -Method GET -Headers @{"key" = "fp3eofkf3-0ef-2kdwpoepwoe03eper30r"}| ConvertTo-Html | Out-File "c:\temp\poshbook\ch8\WeatherData.html"

This cmdlet gets some weather data for my location from the API service from the Weather API, using a personal key, and writes it to an HTML file for display. Obviously, I’ve not put my real personal key in the preceding cmdlet, so it will fail with an API key error if we run that exact code. Let’s consider how we might turn...