C Shell Scripting/Guppies

Lessons

 * 1) C shell does not have functions so all logic must be in-lined. An "alias" can be created to reuse code such as formating a number with commas using the "sed" program.
 * 2) Mathematical expression that are assigned to variable must with the "@" sign instead of the keyword "set".
 * 3) Notice that the syntax is closer to BASIC than the C language with regards to control statements. You must include the key word "then" after the "if" statement expression.