directory-treesize

To download and execute with arguments:
invoke-webRequest "http://aka.ms/directory-treesize.ps1" -outFile "$(get-location)\directory-treesize.ps1";
.\directory-treesize.ps1 c:\windows\system32

To enable script execution, you may need to Set-ExecutionPolicy Bypass -Force

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.