Show number of changed lines per author in git

It's an old post but if someone is still looking for it:

install git extras

brew install git-extras

then

git summary --line

https://github.com/tj/git-extras

one line code(support time range selection):

git log --since=4.weeks --numstat --pretty="%ae %H" | sed 's/@.*//g' | awk '{ if (NF == 1){ name = $1}; if(NF == 3) {plus[name] += $1; minus[name] += $2}} END { for (name in plus) {print name": +"plus[name]" -"minus[name]}}' | sort -k2 -gr

explain:

git log --since=4.weeks --numstat --pretty="%ae %H" \    | sed 's/@.*//g'  \    | awk '{ if (NF == 1){ name = $1}; if(NF == 3) {plus[name] += $1; minus[name] += $2}} END { for (name in plus) {print name": +"plus[name]" -"minus[name]}}' \    | sort -k2 -gr# query log by time range# get author email prefix# count plus / minus lines# sort result

output:

user-a: +5455 -3471user-b: +5118 -1934

Since the SO question "How to count total lines changed by a specific author in a Git repository?" is not completely satisfactory, commandlinefu has alternatives (albeit not per branch):

git ls-files | while read i; do git blame $i | sed -e 's/^[^(]*(//' -e 's/^\([^[:digit:]]*\)[[:space:]]\+[[:digit:]].*/\1/'; done | sort | uniq -ic | sort -nr

It includes binary files, which is not good, so you could (to remove really random binary files):

git ls-files | grep -v "\.\(pdf\|psd\|tif\)$"

(Note: as commented by trcarden, a -x or --exclude option wouldn't work.
From git ls-files man page, git ls-files -x "*pdf" ... would only excluded untracked content, if --others or --ignored were added to the git ls-files command.)

Or:

git ls-files "*.py" "*.html" "*.css" 

to only include specific file types.

Still, a "git log"-based solution should be better, like:

git log --numstat --pretty="%H" --author="Your Name" commit1..commit2 | awk 'NF==3 {plus+=$1; minus+=$2} END {printf("+%d, -%d\n", plus, minus)}'

but again, this is for one path (here 2 commits), not for all branches per branches.