Grep review for the morning:
	Examples including a variable of type int
	Checking to see if the NVIDIA video driver is used
	Check to see which computers in MLH 310 are running Linux

Shell Variables:
	A variable you can use in a shell
	Example:  DISPLAY
		Log into another machine and try it
	Setting with export
	$ to use later
		This will expand the variable name
		Demo with parameter printing program
		"expand" here can make it bigger or smaller
	A couple more that might be good to know:
		PS1
		PATH
	run export with no paramters to list them all

Back to my .profile:
	What shell variables do I set?

functions:
	These take parameters, and can call each other
	Using a function vs. a script:
		script can be run as a program
		script can be moved around easily
		script runs as a child of the shell
			Try cd inside it, or setting a shell variable
	A lot of the time, you have a choice here

What happens if you make a bad mistake?
	You can install a new .profile in some non-shell-using way
	This can be harder than it looks!
	Like yesterday...

How do they look on the inside?
	getenv function

C interlude:
	C strings vs. C++ strings
	Arrays of characters vs. an object
	Library functions for C strings:
		strcmp
		strlen
		strcpy / strncpy (and security)
		strstr
		sprintf
	Ok, couple examples
		Figure out if the string has a squirrel in it
		Count the letters (not characters) in a string
	system function

Would it be nice if we had a C function like Python's getoutput?
	Note:  C is not usually considered a scripting language
		So you're expected to use libraries instead of running programs
	But if we want one anyway...