title: psql: FATAL: role "postgres" does not exist
body: <p>I'm a postgres novice. </p>
  
  <p>I installed the postgres.app for mac. I was playing around with the psql commands and I accidentally dropped the postgres database. I don't know what was in it. </p>
  
  <p>I'm currently working on a tutorial: <a href="http://www.rosslaird.com/blog/building-a-project-with-mezzanine/">http://www.rosslaird.com/blog/building-a-project-with-mezzanine/</a></p>
  
  <p>And I'm stuck at <code>sudo -u postgres psql postgres</code></p>
  
  <p>ERROR MESSAGE: <code>psql: FATAL:  role "postgres" does not exist</code></p>
  
  <p>$ which psql </p>
  
  <pre><code>/Applications/Postgres.app/Contents/MacOS/bin/psql
  </code></pre>
  
  <p>This is what prints out of <code>psql -l</code></p>
  
  <pre><code>                                List of databases
      Name    |   Owner    | Encoding | Collate | Ctype |     Access privileges     
  ------------+------------+----------+---------+-------+---------------------------
   user       | user       | UTF8     | en_US   | en_US | 
   template0  | user       | UTF8     | en_US   | en_US | =c/user                  +
              |            |          |         |       | user      =CTc/user      
   template1  | user       | UTF8     | en_US   | en_US | =c/user                  +
              |            |          |         |       | user      =CTc/user      
  (3 rows)
  </code></pre>
  
  <p>So what are the steps I should take? Delete an everything related to psql and reinstall everything?</p>
  
  <p>Thanks for the help guys!</p>