This is off topic a bit, but there is a solution for this:

> Slow compilation: more than a minute (makes to start browsing HN, missing the end, thus losing even more time)

See the thread here: https://askubuntu.com/questions/409611/desktop-notification-...

TL;DR install undistract-me, add 2 lines to bashrc, and you will get a desktop popup when a command that takes longer than 10 seconds to complete is finished.

Fedora does this by default on install and I have found it so handy. Kick off a compile etc, then just browse HN/reddit til I get the popup.