2017-4-1为开始时间,2017-9-30为结束时间
git log --format=’%aN’ | sort -u | while read name; do echo -en
“KaTeX parse error: Expected 'EOF', got '\t' at position 5: name\̲t̲"; git log --au…name” --pretty=tformat: --since
==2017-4-1 --until=2017-9-30 --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