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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 FREE CHAPTER 2. Modules 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

Switch, break, and continue

By default, switch executes every case where the case evaluates as true when compared with the value.The break and continue keywords may be used within the switch statement to control when testing should stop.

  • When break is used in a case, the switch statement ends.
  • When continue is used, and the value is a scaler, the switch statement ends.
  • When continue is used and the value is an array, moves to the next element.

break is often most appropriate if the value is a scalar; continue when the value is an array. However, either may be used as needed.The switch statement will not stop testing conditions unless the break keyword is used. In the example below, all conditions are tested:

$value = 1
switch ($value) {
    1 { Write-Host 'value is 1' }
    1 { Write-Host 'value is still 1' }
} 

The example above will show the output below:

value is 1
value is still 1

In the following example, where switch is acting on an array, both statements...

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