There was a time when people were suffering to make a application run on every Computer. Every individual hardware manufacturer used to have a separate Operating System.
Unix was an Open Source Software, which was later taken over by AT&T Company. Due to some legal Implications later there was a free version of Unix named as FreeBSD but by then most Open Source developers scattered away from Unix.
Open Source means that program code of that particular software which is Open Sourced is available for everyone to read it.
Some Licenses were made so that no one can copy these Open Source projects and claim as their own.
In 1991, Linus Torvalds, created Linux kernel, just for his personal use and fun. After getting some appreciation and others' help, he was excited about its growing acceptance and decided to take his creation as far as he could. In a rare Ted Hour interview, he admitted that he did not initially realize how much the collaborative efforts (eventually) of thousands of people across the Globe would be in developing the LINUX concept.
The Linux Kernel was licensed under a GPL.
A foundation named as GNU (Often stated as, GNU is Not Unix), has all Open Source libraries and programs, but doesn't have a kernel to run them, then with combination of these both GNU and Linux, now a complete Operating System can be made.
There are many Operating System's which are based on Linux Kernel with several GNU Programs included, these Operating Systems are called as Distributions.
Some of the better known distributions are Debian, Ubuntu, Arch-Linux, Fedora, Android, Chrome-OS..... There are also several Desktop Environments (i.e., the way your Desktop Looks [Appearance] ) as well, these include KDE, Gnome, XFCE, LXDE, Awesome...
The greatness of Linux comes with it being Open Source and the freedom for many developers all around the world who contribute to Linux kernel to modify it and several other Linux based Operating Systems.
They have many advanced features a user need, but does not have the market saturation of Microsoft Windows or Macintosh, since many Desktop Computers or Laptops are pre-installed with one of these. Other reasons include that some people consider it hard to use and need some coding skills, but now Linux compatible Desktop Environments are good enough that the user doesn't need any Programming skills to use a Linux-based Operating System.
Most people consider Linux as an Operating System, but Linux Means Kernel.
The kernel is the main component of an Operating System and is necessary to run it. The kernel takes care of memory allocation and several other things related to hardware, you can consider it as a communicator, which communicates with hardware. It is responsible for almost all the advanced tasks which are related to the computer or a device.
Linux is also famous for its security, where you would get your security updates within hours or so, if any problems was found.
Updates weren't pushed to people without notification, updates are only downloaded and installed only with user permission.
It is well known for its multiuser support amongst other features.
There were several popular devices which were based on Linux Kernel, some of them are:
- Tesla Cars
- Smart Televisions
- Satellites (Some Part of them)
- 97% of Servers
- Top 10 Super Computers and many more
Do you find any reason not to learn about Linux?
The world runs on Linux and it will do so in the future.