Before we switch mostly to C:
	Scripts!

A simple script:  Just a bunch of commands in a file
	You can totally do that
	It can save a bunch of time

Arguments to scripts:
	They're just $1, $2, etc.

Conditionals:
	"if" and "while" are keyed off return value
	Most commands do set this.  grep example

test ([)
	Yes, there is a command called [
	It's a real program
	It *will* refuse to run if it doesn't have ] as a parameter
	You can also call it test

Alright, can we tell if my laptop is too hot?
	I think the fan went bad, or maybe it's just full of dust

Today we finally did an active learning!

Create a script, named al1002, which will output the number of unique users who have logged into isoptera during the period last covers (at this point, from October 1 until now, so the past two days).  You'll have to pipe last into something that'll give just the usernames, then sort (-u will give unique entries), filter out the lines that aren't a user unless your username finding command already did, and then count them (probably with wc).

The script should be executable (chmod 705 or some such), and remember to include #!/bin/sh so it can be run.