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Mastering PowerShell Scripting

You're reading from   Mastering PowerShell Scripting Automate and manage your environment using PowerShell 7.1

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Product type Paperback
Published in Jun 2021
Publisher Packt
ISBN-13 9781800206540
Length 788 pages
Edition 4th Edition
Languages
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Author (1):
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Chris Dent Chris Dent
Author Profile Icon Chris Dent
Chris Dent
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Table of Contents (26) Chapters Close

Preface 1. Introduction to PowerShell 2. Modules and Snap-Ins FREE CHAPTER 3. Working with Objects in PowerShell 4. Operators 5. Variables, Arrays, and Hashtables 6. Conditional Statements and Loops 7. Working with .NET 8. Strings, Numbers, and Dates 9. Regular Expressions 10. Files, Folders, and the Registry 11. Windows Management Instrumentation 12. Working with HTML, XML, and JSON 13. Web Requests and Web Services 14. Remoting and Remote Management 15. Asynchronous Processing 16. Graphical User Interfaces 17. Scripts, Functions, and Script Blocks 18. Parameters, Validation, and Dynamic Parameters 19. Classes and Enumerations 20. Building Modules 21. Testing 22. Error Handling 23. Debugging and Troubleshooting 24. Other Books You May Enjoy
25. Index

Web requests

A background in web requests is valuable before delving into interfaces that run over the top of the Hypertext Transfer Protocol (HTTP).

PowerShell can use Invoke-WebRequest to send HTTP requests. For example, the following command will return the response to a GET request for the Hey, Scripting Guy blog:

Invoke-WebRequest https://blogs.technet.microsoft.com/heyscriptingguy/

Parsing requires Internet Explorer

In Windows PowerShell, UseBasicParsing was an important parameter. Its use was mandatory when working on Core installations of Windows Server as Internet Explorer was not installed. It was also often used to improve the performance of a command where parsing was not actually required.

In PowerShell Core, all requests use basic parsing. The parameter is deprecated and present to support backward compatibility only. The parameter does not affect the output of the command.

A web request has an HTTP method. A request might...

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