It's a Server OS

If you have heard of Linux, you probably heard of it as the operating system of servers. It is true that Linux presents more challenge to Windows (product of Microsoft) in server rooms than anywhere else.

I personally use Linux for my online server. I use the same old machine (AMD K6-2 300Mhz 128MB RAM, 40GB HD) for web server, email server and file server, and it can still handle the load!