bash script to find monthly git commits by users on monthly basis

git_commits_monthly

#/bin/bash

DATES=("2014-03-01" "2014-04-01" "2014-05-01" "2014-06-01" "2014-07-01" "2014-08-01" "2014-09-01" "2014-10-01" "2014-11-01" "2014-12-01" "2015-01-01" "2015-02-01" "2015-03-01")
let "counter = 1"

for i in "${DATES[@]}"
do
    echo -n "$i"
    echo
    git shortlog -s -n  --after=${DATES[counter-1]} --before=${DATES[counter]}
    echo

    let "counter +=1"
done