参考：
https://segmentfault.com/a/1190000008542123

每人的代码量统计：
git log --format='%aN' | sort -u | while read name; do echo -en "$name\t"; git log --author="$name" --pretty=tformat: --numstat | awk '{ add += $1; subs += $2; loc += $1 - $2 } END { printf "added lines: %s, removed lines: %s, total lines: %s\n", add, subs, loc }' -; done

查看仓库提交者排名前 5
git log --pretty='%aN' | sort | uniq -c | sort -k1 -n -r | head -n 5

根据时间，每人的代码量统计：
lizh@PC-20210614QCLT MINGW64 /c/AAAAA/code/Huayudata-Basic-Framework (wangs-cloud)
$ git log --format='%aN' --since=2021-09-01 --until=2021-10-01 | sort -u | while read name; do echo -en "$name\t"; git log --author="$name" --pretty=tformat: --numstat | awk '{ add += $1; subs += $2; loc += $1 - $2 } END { printf "added lines: %s, removed lines: %s, total lines: %s\n", add, subs, loc }' -; done