Even if you have never heard of it, if you are a regular internet user, or a regular user of a modern smartphone, you are interacting with the Linux operating system all of the time.
In terms of marketshare of public servers on the internet, Linux is installed on around 38.6% of these machines. Most of the popular social media services are built using it, at least at some level.
But what is it?
Remember to turn the subtitles on – as some of this is not in English – but enjoy this documentary on how Linux came to be.