vocab
cd = current directory
pwd = print working directory
ls = list
mv = move
cp = copy
mkdir= make directory
ssh = secure shell
a = all
tuple = combination of entities, or values
\ = changes character after it ( \n = new line )
ctrl h = del
printenv = print environment
./ = in current directory, run
-l = long form (for ls)
whereis = shows path?
raw_input = turns input in to string without altering data (can be used to give return value from other programs)
eval = returns / evaluates
string.replace = replaces values in a string (makes a new string) new_s = string.replace(s, i, i|)
char = tells you the character assigned to the number
\n = new line
\\ =
