[1-more]

plus the delightful mechanism of

    set -euo pipefail # stop execution if anything fails
    cleanup () {
        rm $tmp_file
        popd
        # anything else you want to think of here to get back to the state of the
        # world before you ran the script
    }
    trap cleanup EXIT # no matter how the program exits, run that cleanup function.

A really good rundown of the different options for set https://www.howtogeek.com/782514/how-to-use-set-and-pipefail...