Please be sure to code in BASH LINUX/UNIX and comment on your code. Please take your time to read. I appreciate any help, even if it just gets me started on it.

The goal of this assignment is to code a shell that can execute 3 commands: \"cd\", \"pwd\", and \"exit,\" as well as handle errors and other things.

I have posted 2 pictures and they are easily readable on a desktop/laptop, if you cannot see them, please let me know, but there is little I can do besides reposting the question.