top-contributors-by-added-lines.sh

git log --since="3 months ago" --pretty=tformat:"%an" --numstat |                                                                        KGEMBADOC-1320 ✭ 22:34:52
  awk '
    NF==1 {author=$1}
    NF==3 {additions[author]+=$1; deletions[author]+=$2}
    END {
      for (a in additions)
        printf "%s,%d,%d\n", a, additions[a], deletions[a]
    }' | sort -t',' -k2,2nr | awk -F',' '
    BEGIN { printf "%-25s %10s %10s\n", "Author", "Additions", "Deletions" }
    { printf "%-25s %10d %10d\n", $1, $2, $3 }'