Delete Azure Resource Groups with no resources in it

Question

I am trying to find all the Azure RM resource groups with no resources in it and delete those resource groups using PowerShell. Deleting using Portal is so time consuming. Using

Answer 1

You could try

$allResourceGroups = Get-AzureRmResourceGroup | ForEach-Object { $_.ResourceGroupName }

$resourceGroupsWithResources = Get-AzureRMResource | Group-Object ResourceGroupName | ForEach-Object { $_.Name }

$emptyResourceGroups = $allResourceGroups | Where-Object { $_ -NotIn $resourceGroupsWithResources } 

$emptyResourceGroups | ForEach-Object { Remove-AzureRmResourceGroup -Name $_ -Force }

Here they are packaged as functions that can be called

Function Get-AzureRmResourceGroupsWithNoResources {
    process {
        $allResourceGroups = Get-AzureRmResourceGroup | ForEach-Object { $_.ResourceGroupName }

        $resourceGroupsWithResources = Get-AzureRMResource | Group-Object ResourceGroupName | ForEach-Object { $_.Name }

        $emptyResourceGroups = $allResourceGroups | Where-Object { $_ -NotIn $resourceGroupsWithResources } 

        return $emptyResourceGroups
    }
}

Function Remove-AzureRmResourceGroupsWithNoResources {
    process {   
        Get-AzureRmResourceGroupsWithNoResources | ForEach-Object { Remove-AzureRmResourceGroup -Name $_ -Force }
    }
}