title: How to set variables in Fish shell?
body: <p>The set command in my fish shell in Ubuntu (elementary OS and Linux Mint) doesn't work. The variables stay empty and even the examples in the tutorials don't work, i.e.: </p>
  
  <blockquote>
    <p>(set foo hi --> # Sets the value of the variable $foo to be 'hi'.).   </p>
  </blockquote>
  
  <p>In the script I am trying to do the following, </p>
  
  <pre><code>set COUNTRY US CN MX
  </code></pre>
  
  <p>but when I want to call the variable by <code>$COUNTRY</code> there is no answer.</p>
  
  <p>What am I doing wrong?</p>