Count the commits and lines modified by a user, from a start date, across a bunch of projects.

count_commits.sh

#!/bin/bash

## usage: just run script (relative file paths to project adjusted)
# $ count_commits.sh

## array of project dirs
declare -a project_dirs=("./foo" "./bar" "./qux")

# ignore files with these extensions
excludes="':!*.ipynb' ':!*.json' ':!*.log' ':!*.pb' ':!*.fb' ':!*.bin'"

# begin on this date
start_date="01 Jan 2022"

## lib fns
trim() {
    local var="$*"
    # remove leading whitespace characters
    var="${var#"${var%%[![:space:]]*}"}"
    # remove trailing whitespace characters
    var="${var%"${var##*[![:space:]]}"}"
    printf '%s' "$var"
}

## now loop through the above projects
for i in "${project_dirs[@]}"
do
    echo -e "------ project: $i -------"
    cd "$i"
    user_name=$(git config user.name)
    echo -e "commits:"
    trim $(git --no-pager shortlog -s -n --all --since="$start_date" --author="$user_name" -- . $excludes)
    echo -e ""
    echo -e "lines:"
    git log --numstat --pretty="%H" --author="$user_name" --since="$start_date"  -- . $excludes \
        | awk 'NF==3 {plus+=$1; minus+=$2} END {printf("+%d, -%d\n", plus, minus)}'
    cd ..
done