Get some code line vs. test code metrics for each tag

metrics.sh

#!/bin/bash

counter=0

for tag in `git for-each-ref --sort=taggerdate --format='%(refname:short)' refs/tags`
do
        echo $tag
        git checkout $tag
        code_line_count=`grep -vR '^\s*$\|^\s*#.*$' ./app/**/* | wc -l`
        test_line_count=`grep -vR '^\s*$\|^\s*#.*$' ./features/**/* | wc -l`
        date=`git show --quiet refs/tags/$tag --format='%ad' | grep +`
        Tagarray[$counter]="$tag;$date;$code_line_count;$test_line_count"
        counter=$counter+1
done


printf "%s\n" "${Tagarray[@]}"