title: Check if a condition is false
body: <p>It is seems to be an easy question, I wonder why googling didn't give anything helpful -- nor in StackOverflow, nor in tutorials. I just need to check using bash that a condition is false. </p>
  
  <p>Of what I found I tried </p>
  
  <pre><code>if ! [ 0==2 ]; then echo Hello; fi
  </code></pre>
  
  <p>and </p>
  
  <pre><code>if [ ! 0==2 ]; then echo Hello; fi 
  </code></pre>
  
  <p>none of them print <em>Hello</em>.</p>
  
  <p>I found only two similar questions, but the end answer in both cases was restructured code to not use the "false" condition.</p>