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Mastering Windows PowerShell Scripting

You're reading from   Mastering Windows PowerShell Scripting Master the art of automating and managing your Windows environment using PowerShell

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Product type Paperback
Published in Apr 2015
Publisher
ISBN-13 9781782173557
Length 282 pages
Edition 1st Edition
Languages
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Author (1):
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Brenton J.W. Blawat Brenton J.W. Blawat
Author Profile Icon Brenton J.W. Blawat
Brenton J.W. Blawat
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Table of Contents (16) Chapters Close

Preface 1. Variables, Arrays, and Hashes FREE CHAPTER 2. Data Parsing and Manipulation 3. Comparison Operators 4. Functions, Switches, and Loops Structures 5. Regular Expressions 6. Error and Exception Handling and Testing Code 7. Session-based Remote Management 8. Managing Files, Folders, and Registry Items 9. File, Folder, and Registry Attributes, ACLs, and Properties 10. Windows Management Instrumentation 11. XML Manipulation 12. Managing Microsoft Systems with PowerShell 13. Automation of the Environment 14. Script Creation Best Practices and Conclusion Index

Methodologies for testing code


When you are creating PowerShell Scripts, it is imperative that you test your code along the way. While there are many different development standards which you can follow such as Scrum and Agile, they all have the same premise of "test often". This section will explore recommendations for testing your code as you are developing it so that you can provide more reliable scripts.

Testing the –WhatIf argument

PowerShell offers the ability to test the cmdlet's code without actually running them. This is done by the use of the –WhatIf argument. The –WhatIf argument will simulate the action that the cmdlet will take on a system without actually executing the command itself. This can assist you in determining if you have the right syntax for a command. This can also benefit you if you're getting large content from a file and need to verify that the individual items in the file won't crash your script.

To use the –WhatIf argument, perform the following action:

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