What is Linux?
Linux is an Operating System, which is responsible mainly for the way the user interacts with the computer's hardware ... so as far as the computer user and the hardware of the computer go, the Operating System is the "middle-man" thats in between the two.
(Programs you may be thinking of right now, RUN ON an Operating System)Microsoft Windows, no matter which version, and Apple's Mac OS's are known to many people … though some people overlook Linux as a 100% FREE alternative to Microsoft or Apple Operating Systems.