Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Mastering Windows PowerShell Scripting (Second Edition)

You're reading from   Mastering Windows PowerShell Scripting (Second Edition) One-stop guide to automating administrative tasks

Arrow left icon
Product type Paperback
Published in Oct 2017
Publisher Packt
ISBN-13 9781787126305
Length 440 pages
Edition 2nd Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Chris Dent Chris Dent
Author Profile Icon Chris Dent
Chris Dent
Arrow right icon
View More author details
Toc

Table of Contents (18) Chapters Close

Preface 1. Introduction to PowerShell FREE CHAPTER 2. Working with PowerShell 3. Modules and Snap-Ins 4. Working with Objects in PowerShell 5. Operators 6. Variables, Arrays, and Hashtables 7. Branching and Looping 8. Working with .NET 9. Data Parsing and Manipulation 10. Regular Expressions 11. Files, Folders, and the Registry 12. Windows Management Instrumentation 13. HTML, XML, and JSON 14. Working with REST and SOAP 15. Remoting and Remote Management 16. Testing 17. Error Handling

Variable commands

A number of commands are available to interact with variables:

  • Clear-Variable
  • Get-Variable
  • New-Variable
  • Remove-Variable
  • Set-Variable

Clear-Variable

Clear-Variable removes the value from any existing variable. Clear-Variable does not remove the variable itself. For example, the following example calls Write-Host twice: the first time it writes the variable value; the second time it does not write anything:

PS> $temporaryValue = "Some-Value"
Write-Host $temporaryValue -ForegroundColor Green

Some-Value

PS> Clear-Variable temporaryValue
Write-Host $temporaryValue -ForegroundColor Green

Get-Variable

...
lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at €18.99/month. Cancel anytime