title: How to create a permanent “alias” for ubuntu?
body: <p>If you create an alias for example: </p>
  
  <pre><code>alias cls="clear"
  </code></pre>
  
  <p>It exists untill you kill terminall session. When you start a new terminal window the alias doesn't exist any more. How to create "permanent" alias, one that exists in every terminal session?</p>