take a walk through &#x2F;usr&#x2F;share&#x2F;doc<p>or go to the source:
<a href="https:&#x2F;&#x2F;github.com&#x2F;karelzak&#x2F;util-linux" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;karelzak&#x2F;util-linux</a>