Linux operating system was introduced 20 years ago, within these 20 years it had grown into a favorite of many people around the world simply because it has some cool features which other operating system don’t have or can be compared. One is its open source or in a common language it’s Free, means download it for free, use it for free, and modify it for free. Second is the security, Linux is very secure operating system and its mainly used in server level environment like web servers etc where Windows like OS is last choice of any user. Well when we start speaking about Linux there are really lots to say and share, so watch video to see how it all began and what’s it now.