What do shells do?
	Display a prompt
	Run commands

Features that work in scripts
	change directory
	wildcards!
		*
		ranges with { }
	backticks ` `
	pipes |
	redirection with > < and 2>
	math if you remember how
	if statements
	loops
	semicolon to separate statements
	uses a path to search for commands
	variables
	

Features, interactive
	command history
	tab completion