I did this recently as a more generalised service for tracking changes to the output of commands:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;ianmiell&#x2F;alert-on-change&#x2F;blob&#x2F;master&#x2F;README.md" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ianmiell&#x2F;alert-on-change&#x2F;blob&#x2F;master&#x2F;READ...</a><p>It adds the concept of degree of change to the output triggering an alert.