warm up questions (pre class):
- man pages
  man -k <thing you are looking for>
  man <sectionnumber> <callyouareinterestedin>
  e.g., man 2 write
  syscalls are in section 2 of the man pages
  why? because
  use google instead

main event (class):
x web page
x p2 overview (read)
x built-ins vs. commands that are programs
  creating a new process/not
x fork/exec/wait (again)
x redirection

after class:
???