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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

Debugging in the console

The PowerShell debugger allows code execution to be paused and the state of a script to be analyzed at a specific point.

These points are known as breakpoints and are set using the Set-PSBreakpoint command.

PowerShell describes the following operations in the about_Debuggers help file:

Get-Help about_Debuggers

You can use the Set-PSBreakpoint command to set a breakpoint when a command is run, when a variable is used, or on a specific line in a saved script.

Setting a command breakpoint

Setting a breakpoint on a command will trigger the debugger when that command is run.

In the next example, a breakpoint is created that triggers when the Get-Process command runs. As Get-Process is inside a loop, it will be possible to inspect the state of variables inside the loop in the debugger:

Set-PSBreakpoint -Command Get-Process
$names = 'powershell', 'pwsh', 'code'
foreach ($name in $names) {
    Get-Process...
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