This examine is open notes only. I've compiled the following list, but
it is your duty to ensure that it is complete. I'll be happy to add any
missing elements to the list if you email them to me.

Commands and Topics:

ls, cat, echo, pwd, cd
rm, mv, cp, vi, mkdir,
chmod, chown, chgrp
script, exit, stat,
grep, sed, awk, groups,



Permissions, Groups, Ownership, Files, 
File Redirection (>, <, >>, 2>), pipes (|)
Makefiles (make, %, $, dependencies)

C-style Pieces
cstrings, cstring commands
printf, sprintf, scanf,
FILE *, C files, fprintf, fscanf

C++ Pieces
fstream, C++ files
stringstream

Systems Programming
argc, argv, command line arguments
opendir, readdir
system
perror


? :   notation for conditional set