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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

Parameters, values, and parameter sets

As seen while looking at syntax in Get-Help, commands accept a mixture of parameters. The following sections show how these parameters are described in help and how to use them.

Parameters

When viewing help for a command, several different conventions are used to describe when a parameter is required and how it should be used. These conventions include:

  • Optional parameters, where parameter names and arguments are enclosed in a single pair of square brackets.
  • Optional positional parameters, the same as an optional parameter but with the parameter name also enclosed in square brackets.
  • Mandatory parameters, where the parameter name and argument are not bracketed.
  • Mandatory positional parameters, where the parameter name is in square brackets, but the argument is not.

The following sections show each of these conventions in greater detail.

Optional parameters

Optional parameters are surrounded...

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