title: set blank password for PostgreSQL user
body: <p>I use postgresql command 'createuser myusername'. It prompts me for password always. If I leave password blank it gives an error that no password is specified.</p>
  
  <p>I simply want to create a user with blank/no password and I'm not able to do it with Postgresql 9 under mac os x.</p>
  
  <p>What steps should I take to create a user with no password. The command always asks me to enter a password.</p>