Summary

In this first hour, the goal was for you to learn a bit about what UNIX is, where it came from, and how it differs from other operating systems that you might have used in the past. You also learned about the need for security on a multiuser system and how a password helps maintain that security, so that your files are never read, altered, or removed by anyone but yourself.

You also learned what a command shell, or command-line interpreter, is all about, how it differs from graphically oriented interface systems like the Macintosh and Windows, and how it's not only easy to use, but considerably more powerful than dragging and dropping little pictures.

Finally, you learned about getting help on UNIX. Although there aren't many options, you do have the manual pages available to you, as well as the command-line arguments and apropos.