title: Postgresql not starting even after editing rc file
body: <p>I receive the following error when I try to start postgresql aka psql in Slackware Linux:</p>
  <pre><code>psql: error: connection to server on socket &quot;/tmp/.s.PGSQL.5432&quot; failed: No such file or directory
          Is the server running locally and accepting connections on that socket?
  
  </code></pre>
  <p>I am trying to start it and changed the field in pg_hba.conf to trust from md5.</p>
  <p>At some point it was asking for a password.</p>
  <p>I get the following when I try to start the server:</p>
  <pre><code>
  bash-5.1# postgres -D /pgsql/data
  &quot;root&quot; execution of the PostgreSQL server is not permitted.
  The server must be started under an unprivileged user ID to prevent
  possible system security compromise.  See the documentation for
  more information on how to properly start the server.
  bash-5.1# postgres -D /pgsql/data &gt;logfile 2&gt;&amp;1 &amp;
  [1] 8310
  
  </code></pre>