title: Copy file to local google storage via command line (like gsutil cp)
body: <p>To emulate production, I want to copy a file to my local google storage (app_default_bucket) maintained by the app engine launcher.  This is performed via 'gsutil cp' in production.  I would like to do the same locally.   Possible?</p>
  
  <p>I would like to avoid writing an app just for local use.</p>