title: How to create a user for Postgres from the command line for bash automation
body: <p>I am using Ubuntu 12.04 and Postgress 9.2.</p>
  
  <p>I need to create this user with this password e.g.</p>
  
  <pre><code>postgres://admin:test101@127.0.0.1:5432
  </code></pre>
  
  <p>How to do that from the command line?  I need to automate with a bash script.  I have a fresh install.</p>