Linux itself is not an operating system. For simplicity, we use the word Linux to describe the entire operating system as a whole, but it is important to know this is not technically correct. Linux is only the kernel code (main brain) itself, written by Linus Torvalds. A kernel alone is useless, it needs a thousand other tools and applications to form an operating system. A Linux distribution is a Linux kernel with a ton of other software packages and pieces created by many other people...