Clean-AzResourceGroups.ps1

<#
    .DESCRIPTION
        An example runbook which gets all the ARM resources using the Managed Identity
    .NOTES
        AUTHOR: Azure Automation Team
        LASTEDIT: Oct 26, 2021
#>

try
{
    "Logging in to Azure..."
    Connect-AzAccount -Identity
}
catch {
    Write-Error -Message $_.Exception
    throw $_.Exception
}

$ResourceGroups = Get-AzResourceGroup

foreach ($ResourceGroup in $ResourceGroups)
{
	$Tags = $ResourceGroup.Tags
	if (($Tags -ne $null) -and ($Tags.ContainsKey("AutoDelete")) -and ($Tags["AutoDelete"] -eq "false"))
	{
		Write-Output "Skipping deletion of resource group $($ResourceGroup.ResourceGroupName) because AutoDelete tag is: '$AutoDelete'"
	}
	else
	{
		Write-Output "Will delete resource group $($ResourceGroup.ResourceGroupName)"
		# Remove-AzResourceGroup -Name $ResourceGroup.ResourceGroupName -Force -AsJob	
	}
}