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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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Toc

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 other PowerShell processes

A PowerShell developer can make use of Enter-PSHostProcess to debug a script running in a different PowerShell process.

The Enter-PSHostProcess command creates a remote runspace inside an existing PowerShell process.

Demonstrating use requires two PowerShell processes. The first PowerShell process is started, and for convenience, the PID of that process is shown.

A simple infinite loop is started after setting the window title to show the current PID:

$host.UI.RawUI.WindowTitle = 'Script runner: {0}' -f $PID
$i = 0
while ($true) {
    Write-Host "Working on $i"
    $i++
    Start-Sleep -Seconds 30
}

In the example that follows, the first process showed a PID of 14504 and is used to connect to that process. This PID will be different in each case.

A second process is started and the Enter-PSHostProcess command is used to connect to the original PID. The prompt will change to reflect the connection to...

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