title: Unable to connect to firebird
body: <p>I follow this <a href="https://help.ubuntu.com/community/Firebird2.5" rel="nofollow">docs</a> almost line by line:</p>
  
  <pre><code>sudo add-apt-repository ppa:mapopa
  sudo apt-get update
  apt-cache search firebird2.5-*
  sudo apt-get install firebird2.5-superclassic
  sudo dpkg-reconfigure firebird2.5-superclassic
  </code></pre>
  
  <p>At this stage I see a prompt that asks me to set a password for <code>SYSDBA</code>, so I set it to <code>root</code>. Then I do the rest:</p>
  
  <pre><code>sudo apt-get install firebird2.5-examples firebird2.5-dev 
  cd /usr/share/doc/firebird2.5-examples/examples/empbuild/
  sudo gunzip employee.fdb.gz
  sudo chown firebird.firebird employee.fdb
  sudo mv employee.fdb /var/lib/firebird/2.5/data/
  </code></pre>
  
  <p>And, finally:</p>
  
  <pre><code>$ isql-fb
  SQL&gt; connect "/var/lib/firebird/2.5/data/employee.fdb " user 'SYSDBA' password 'root';
  </code></pre>
  
  <p>As a result, I get these error messages:</p>
  
  <pre><code>Statement failed, SQLSTATE = HY000
  operating system directive open failed
  -Permission denied
  </code></pre>
  
  <p>What's wrong with that?</p>