Bash script for counting unique Boost authors by year from commits in a local superproject

ua.sh

#!bash

for year in $(seq 1999 2024); do
    cd boost/libs
    rm -rf ../../../$year.temp.txt
    for dir in */; do
        cd $dir
        git --no-pager log \
            --pretty=format:"%an" \
            --after="$year-01-01" \
            --until="$year-12-31" \
            | sort \
            | uniq \
            >> ../../../$year.temp.txt
        cd ..
    done
    cd ../..
    cat $year.temp.txt \
        | sort \
        | sed 's/ .*//' \
        | uniq \
        > $year.txt
    rm -rf $year.temp.txt
    echo $year","`wc -l < $year.txt`
done