CS/CE 218 Lecture -*-Outline-*-

* introduction

advert: some fundamental terms, as described in chapter 1

** What is an Operating System?
	interface between user and hardware

*** layers of an OS (Unix)
	(draw picture)
		shell
		built-in programs (file system commands, ...)
		kernel (manages the hardware and provides essentials)
		hardware

*** shell
	Q: what is the shell's basic cycle?
		(draw picture)
		read, execute (including command's I/O), print prompt, ...

	how do you know when a command is done?
		what if it doesn't have any output?

(skip the following in lecture)
** Advantages of Unix
	Q: what are the advantages of Unix, vs. other operating systems?

*** File system
	Q: Why are hierarchies (or taxonomies) useful for organizing files?

** History
	Q: When was Unix designed?
	Q: What are the flavors of Unix?