History: Unix, GNU, Gnome
A brief review of the history of Unix will place in context much of the terminology and philosophy of this operating system. Terms like Linux, GNU, Unix, Gnome, Free Software, and Free and Open Source Software get bandied around, often with little understanding and usually with much misunderstanding.
And by the way, the Penguin that has become the logo for GNU/Linux came about after Linus Torvalds, the originally programmer of Linux, was bitten by a penguin at a zoo in Canberra (see the Linux Today article).
A fundamental misunderstanding is the relationship between Linux and operating systems. Linux is the low level code that interacts with and controls the hardware of the computer (whether it is an Intel 486, Pentium, Sun Sparc, or a Merced).