title: username of google cloud instance - where to find out
body: <p>My gmail account I used to create my google cloud instance is johnsmith@gmail.com.</p>
  
  <p>When I tried to connect to instance with WinSCP using "johnsmith" it failed, but it worked with "JOHN.SMITH"?  Where can I find out my exact username for google cloud instance?</p>
  
  <p>UPDATE. I tried web-based SSH and typed <code>whoami</code>, it returned "johnsmith". "john.smith" is my windows local username. It is all very confusing.</p>
  
  <p>ANOTHER UPDATE: My google cloud instance is Ubuntu 16.04 and I am connecting from Windows 7 local machine</p>
  
  <p>P.S. I made up the name, but preserved format for this question.</p>
  
  <p>P.S.S SO does not let me post because I don't meet their standard. Here is some bogus code to meet the standard:</p>
  
  <pre><code>print("Hello, World!")
  </code></pre>