git-contributed-lines-stats.sh

# change lib/ apps/ to folders you worked in, remove grep php if you work not only with php files
git ls-tree --name-only -r HEAD lib/ apps/ | grep 'php' | xargs -n1 git blame -t -c -e | awk  '{print $2}' | sort | uniq -c

# this will bring you number of lines each author contributed
# example:
#  14262 (<author@example.com>
#    364 (<noob@example.com>
#   3483 (<another@example.com>
#  36849 (<mastah@example.com>
#  48434 (<miami@blackcrystal.net>
#     12 (<user-ThinkCentre-M90p.(none)>