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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

Working with WMI

The scope of WMI is vast, which makes it a fantastic resource for automating processes. WMI classes are not limited to the core operating system; it is not uncommon to find classes created after software or device drivers have been installed.

Given the scope of WMI, finding an appropriate class can be difficult. PowerShell itself is well equipped to explore the available classes.

WMI classes

PowerShell, as a shell for working with objects, presents WMI classes in a similar manner to .NET classes or any other object. There are several parallels between WMI classes and .NET classes.

A WMI class is used as the recipe to create an instance of a WMI object. The WMI class defines properties and methods. The WMI class Win32_Process is used to gather information about running processes in a similar manner to the Get-Process command.

The Win32_Process class has properties such as ProcessId, Name, and CommandLine. It has a terminate method that can be used...

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