title: How to install progresql-9.3 properly
body: <p>I followed the installation on this document <a href="http://www.postgresql.org/download/linux/ubuntu/" rel="noreferrer">http://www.postgresql.org/download/linux/ubuntu/</a> and every thing seems to be fine. But when I try to this follow this tutorial: <a href="http://www.postgresql.org/docs/9.3/static/tutorial-createdb.html" rel="noreferrer">http://www.postgresql.org/docs/9.3/static/tutorial-createdb.html</a>, everything is not fine any more. This is the error I got when I try to create a database table:</p>
  
  <pre><code>$ createdb mydb
  WARNING: password file "/home/.../.pgpass" has group or world access; permissions should     be u=rw (0600) or less
  WARNING: password file "/home/.../.pgpass" has group or world access; permissions should be u=rw (0600) or less
  createdb: could not connect to database template1: FATAL:  role "..." does not exist
  
  
  $ /usr/local/pgsql/bin/createdb mydb
  bash: /usr/local/pgsql/bin/createdb: No such file or directory
  </code></pre>