backup_and_delete_unlinked_gpos.ps1

 .SYNOPSIS  
 Script used to find all unlinked gpos, back them up and then delete them.
    
 .DESCRIPTION 
 The script searches your logged on domain for unlinked GPO's. It then backs them up to a folder on the C:\. It will then remove them. It also creates a log file in the same directory.

 .LINK
http://www.pixelrobots.com
 #>


Import-Module grouppolicy 
$domain = get-addomain
$DNS = $domain.DNSRoot
$path= "C:\GPOBackups"
New-Item $Path -type directory -Force

Get-GPO -All -DomainName $DNS | Sort-Object displayname | Where-Object { If ( $_ | Get-GPOReport -ReportType XML | Select-String -NotMatch "<LinksTo>" ) 
{

  $name = $_.DisplayName
  $dir = New-Item "$path\$DNS\$name" -Type Directory

	Backup-GPO -Guid $_.Id -Path $dir

	Get-GPOReport -name $name -ReportType Html -Path "$dir\$name.html"
$_.DisplayName | Out-File "$path\$DNS\UnLinkedGPOS.txt" -Append
$_.Displayname | remove-gpo -Confirm -WhatIf

}}