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Mastering PowerShell Scripting

You're reading from   Mastering PowerShell Scripting Automate repetitive tasks and simplify complex administrative tasks using PowerShell

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Product type Paperback
Published in May 2024
Publisher Packt
ISBN-13 9781805120278
Length 826 pages
Edition 5th 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 (23) Chapters Close

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

The Set-PSBreakpoint command can be used 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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