Clean old branches in a git repo

clean-branches.sh

#!/bin/sh

# Usage:
# ./clean-branches.sh /path/to/reponanme

if [ ! -d "$1" ]; then
        echo "'$1' is not a directory!"
        echo "Usage:"
        echo "$0 /path/to/reponame"
        exit 1
fi

REPO_DIR=${1%/}
REPO_NAME=${REPO_DIR##*/}
LOG=/var/log/git/$REPO_NAME.log
DATE=`date +%Y-%m-%d.%H:%M:%S`
MERGED="90 days"
NOMERGED="180 days"

# check the master branch
cd $REPO_DIR

if [ `git rev-parse --abbrev-ref HEAD` != "master" ]; then
	echo "Current branch is not 'master'"
	exit 1;
fi;

# find and delete merged branches older than

for BRANCH in `git branch --merged | grep -v -e master -e develop`; do
	NCOMMITS=`git log --oneline --since="$MERGED" -1 $BRANCH | wc -l`
	#echo $BRANCH $MERGED $NCOMMITS
	if [ $NCOMMITS == "0" ]; then
		LASTCOMMIT=`git log --oneline -1 --format="%h by '%cn' %cr: %s" $BRANCH`
		echo "$DATE merged branch '$BRANCH' with last commit $LASTCOMMIT"
		# delete branch
		git branch -d $BRANCH
	fi;
done;

# find and delete not merged branches older than

for BRANCH in `git branch --no-merged | grep -v -e master -e develop`; do
        NCOMMITS=`git log --oneline --since="$NOMERGED" -1 $BRANCH | wc -l`
        #echo $BRANCH $MERGED $NCOMMITS
        if [ $NCOMMITS == "0" ]; then
                LASTCOMMIT=`git log --oneline -1 --format="%h by '%cn' %cr: %s" $BRANCH`
                echo "$DATE not merged branch '$BRANCH' with last commit $LASTCOMMIT"
                # delete branch
		git branch -D $BRANCH
        fi;
done;