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Learn PowerShell Core 6.0

You're reading from   Learn PowerShell Core 6.0 Automate and control administrative tasks using DevOps principles

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Product type Paperback
Published in Jul 2018
Publisher Packt
ISBN-13 9781788838986
Length 552 pages
Edition 1st Edition
Languages
Concepts
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Authors (2):
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David das Neves David das Neves
Author Profile Icon David das Neves
David das Neves
Jan-Hendrik Peters Jan-Hendrik Peters
Author Profile Icon Jan-Hendrik Peters
Jan-Hendrik Peters
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Toc

Table of Contents (21) Chapters Close

Preface 1. Current PowerShell Versions FREE CHAPTER 2. PowerShell ISE Versus VSCode 3. Basic Coding Techniques 4. Advanced Coding Techniques 5. Writing Reusable Code 6. Working with Data 7. Understanding PowerShell Security 8. Just Enough Administration 9. DevOps with PowerShell 10. Creating Your Own PowerShell Repository 11. VSCode and PowerShell Release Pipelines 12. PowerShell Desired State Configuration 13. Working with Windows 14. Working with Azure 15. Connecting to Microsoft Online Services 16. Working with SCCM and SQL Server 17. PowerShell Deep Dives 18. PowerShell ISE Hotkeys 19. Assessments 20. Other Books You May Enjoy

JSON


JavaScript Object Notation (JSON) is a data format that is easily read by humans and quickly parsed by machines. It has become very popular in combination with REST and for web services, but it is also used for storing configuration data. The following examples show how to work with the two cmdlets called ConvertTo-Json and ConvertFrom-Json:

#Exporting Services to JSON
$ServicesAsJSON = Get-Service | Select-Object -Property DisplayName, ServiceName, Status, StartType | ConvertTo-Json 

#Converting exported JSON object to hashtable
$importedServices =$ServicesAsJSON | ConvertFrom-Json 

#Show 
$importedServices | Out-GridView

#Different types
(Get-Service)[0].GetType()#ServiceController
$importedServices[0].GetType()#PSCustomObject
$importedServices.GetType()#HashTable -- Array

#Loading some JSON data into variable
$someJSONdata ='{"people":[
 { "firstName":"John", "lastName":"Doe" },
 { "firstName":"Jane", "lastName":"Dane" }
]}'

#Converting exported JSON object to hashtable
$ConvertedDataFromJSON...
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