Now, Almost every open source web server using Linux as Operating System. This server also using Linux as Operating System. The Linux Foundation is celebrating 20 years of the famous FOSS operating system, Linux — or GNU-slash-Linux, depending on how hard-line a fossie you’re talking to — with a slew of special events, both online and IRL.
Linux enthusiasts can check out the official anniversary site for details.
Check this video about the story of 20 Years Linux
Or you can seen on this 20 years of Linux Info-graphics below