title: Save a file in a startup-script on Google Cloud Platform when launching a compute engine
body: <p>I have a startup-script that works well when I launch a compute engine on google cloud. Nevertheless it doesn't seem to execute the following command.
  <code>
  echo ${path} &gt; ~/pd.txt
  </code>
  Actually I can't retrieve my file when I look for it at the indicated path.
  Do you have any clue on how I could save a file during startup-script ?</p>