# Setting a Variable
# There can be no spaces
# There should be no dollar signs
A=3
B="Hi There"

# Printing a variable
# Dollar signs are needed
echo $A
echo $B

# Doing basic math the WRONG way
c=$A+2
echo $c

# Doing basic math the right way
let c=$A+2
echo $c

# Array stuff.
# Note the funny curly braces!!!!
array[1]=3
array[100]="I like Arrays"
echo ${array[1]} ${array[100]}


# An if statement
# The else clause is optional
if [ $A == 3 ]; then
   echo A is 3
else
   echo A is not 3
fi
if [ $A -eq 3 ]; then
   echo A is 3
elif [ $a == "four" ]; then
   echo A is four
fi

# For loops
for c in 2 3 5 7 11
do
   echo $c is prime
done
for c in /usr/libexec/y*
do
   echo $c is a file
done

# While loops
c=1
while [ $c -lt 4 ]; do
   echo Counting $c ...
   let c=$c+1
done