[immediate, today only] Simple bash shell scripting (UNIX)

Job ID: 34817530

Budget: $30 – $250 SGD

Earn up to 200$ in a few hours, as I have 3-4 parts that are related, 50$ for each.

I want to understand the code, so I hope you can answer my questions and make any changes if necessary.
Please ask me for more information if you are unsure at any point (i wont be providing the actual files, just telling you what the script needs to do).
Related categories: Shell Script UNIX Bash Scripting