In base you need a hook that get the command before your shell execute the command.
when the shell get the command interrupt this project execute shellfirm before summation in your shell
I just find it hilarious how that guy wanted you to implement this as a shell script so he could “audit it very easily”. I mean, bash-preexec.sh isn’t the worst shell script I’ve seen (It even has a Bats test!), but anyone that thinks shell scripts are easy to audit is full of shit.