Here's a super super hacky script that I wrote to calculate the ratio described in the article. I'll make it a lot better tonight and clean it up. Here's the bash script:

TOTAL_CHANGES="$(git log --all --numstat --pretty="%H" | awk 'NF==3 {plus+=$1; minus+=$2} NF==1 {total++} END {printf("%d\n", plus+minus)}')"

TOTAL_LINES="$(cloc . | tail -n 2 | head -n 1 | awk '{print $NF}')"

echo "scale=2 ; $TOTAL_CHANGES / $TOTAL_LINES" | bc

echo -n ":1"

pwd

One snippet from https://gist.github.com/sephiroth74/d3ce654dcaefe1d2c4cd (modified)

How to run:

1. Clone a Git repo

2. cd into it

3. run bash ../script.sh

Output something like this:

polygot@server:~/tinkerpop$ bash ../script.sh

14.17:1/home/polygot/tinkerpop