title: Installing Octave packages - command pkg not found
body: <p>I've recently install Octave like MatLab alternative in Linux. </p>
  
  <p>I want install fuzzy-logic-toolkit but the pkg command does not exist in my system</p>
  
  <pre><code>λ bgarcial [~/Downloads] → pkg install fuzzy-logic-toolkit-0.4.5.tar.gz
  zsh: command not found: pkg
  
  λ bgarcial [~/Downloads] → 
  </code></pre>
  
  <p>How to can I use the <code>pkg</code> command?</p>