Check number of lines in git

gistfile1.txt

#!/bin/bash

IFS=$'\n' 
git log --format='%aN' | sort -u | while read -r user ; do
  echo $user
  git log --author=$user --pretty=tformat: --numstat -- . ":(exclude)*.pbxproj" ":(exclude)*.xcworkspace" ":(exclude)*.storyboard" ":(exclude)*.xib" ":(exclude)*Pods" ":(exclude)*Podfile.lock"| awk '{ add += $1; subs += $2; loc += $1 - $2 } END { printf "added lines: %s, removed lines: %s, total lines: %s\n", add, subs, loc }'
done