"While the rest of the computing world points and clicks in a scary little world of icons, all alike, we in the world of Unix still have at our fingertips a good old-fashioned CLI, or Command Line Interface. One reason why the command line has remained so pervasive in Unix environments is that the implementation, the Unix shell in its various incarnations, is very good indeed.
"Yet people often learn the few commands they absolutely must--just what they need to, say, read mail, start their editor, and print documents--and leave it at that. Indeed, nowadays, with the spread of sophisticated GUI environments in the Linux and Unix world, many users never so much as see a shell prompt..."
