Git changed lines per author

a.sh

#!/bin/sh
git shortlog -sn | awk ' {print $2, $3, $4} ' > names.txt

cat names.txt | while read cn
do
	name="$(echo $cn | sed -e 's/\r//g')"
	echo $name
	git log --no-merges -p -w --shortstat --author="$name" --since="1 Jan, 2017" -p  -- . ':(exclude)*.xml' ':(exclude)*.png' ':(exclude)*.g.cs' ':(exclude)*.Designer.cs' ':(exclude)lib/*' ':(exclude)*.csproj' | grep -E "fil(e|es) changed" | awk '{files+=$1; inserted+=$4; deleted+=$6} END {print " files changed: ", files, "lines inserted: ", inserted, "lines deleted: ", deleted }'
done

rm names.txt