Azure-Del-Empty-RG.ps1

# from https://pixelrobots.co.uk/2018/04/find-and-delete-all-azure-resource-groups-in-all-your-subscriptions-using-powershell/
#Log in to Azure account
Login-AzureRmAccount

#Get list of Azure Subscription ID's
$Subs = (get-AzureRMSubscription).ID

#Loop through the subscriptions to find all empty Resource Groups and store them in $EmptyRGs
ForEach ($sub in $Subs) {
    Select-AzureRmSubscription -SubscriptionId $Sub
    $AllRGs = (Get-AzureRmResourceGroup).ResourceGroupName
    $UsedRGs = (Get-AzureRMResource | Group-Object ResourceGroupName).Name
    $EmptyRGs = $AllRGs | Where-Object { $_ -notin $UsedRGs }

    #Loop through the empty Resorce Groups asking if you would like to delete them. And then deletes them.
    foreach ($EmptyRG in $EmptyRGs) {
        $Confirmation = Read-Host "Would you like to delete $EmptyRG '(Y)es' or '(N)o'"
        IF ($Confirmation -eq "y" -or $Confirmation -eq "Yes") {
            Write-Host "Deleting" $EmptyRG "Resource Group" 
            Remove-AzureRmResourceGroup -Name $EmptyRG -Force
        } 
    }
}