title: Permanently storing zsh aliases
body: <p>I created a new alias by typing:</p>
  
  <pre><code>~ alias gpo='git push origin'
  </code></pre>
  
  <p>I see my newly created alias when I type <code>alias</code> (which lists all the available aliases) but when I close my terminal and reopen it, they vanish. </p>
  
  <ul>
  <li>How do I ensure that it is permanently available?</li>
  <li>How do I keep a backup of all my aliases so I can carry them with me even if I move between computers?</li>
  </ul>