title: I want to delete all bin and obj folders to force all projects to rebuild everything
body: <p>I work with multiple projects, and I want to recursively delete all folders with the name 'bin' or 'obj' that way I am sure that all projects will rebuild everything (sometimes it's the only way to force Visual Studio to forget all about previous builds). </p>
  
  <p>Is there a quick way to accomplish this (with a .bat file for example) without having to write a .NET program?</p>