compare_codebase_to_testbase_in_terms_of_commits_within_an_interval.sh

(
    echo 'app/'
    echo 'test/'
) \
    | xargs -I@ bash -c "
        echo @
        git log \
                --since='3 weeks ago' \
                --format='%ad' \
                --date=iso-local @ \
            | cut -d ' ' -f1 \
            | sort \
            | uniq -c"