Delete/Remove old Git Branches

delete_old_git_branches.sh

#!/bin/bash

##
# Script to delete remote git branches
##

# Fetch the remote resources
git fetch

# Loop through all remote merged branches
count=0
date='Sep 1, 2021'
echo "Branches that are older than $date"

for branch in $(git branch -r --merged | grep -v HEAD | grep -v develop | grep -v master | grep -v master | sed /\*/d); do
        if [ -z "$(git log -1 --since="$date" -s ${branch})" ]; then
                echo -e `git show --format="%ci %cr %an" ${branch} | head -n 1` \\t$branch
                count=$((count + 1))
                remote_branch=$(echo ${branch} | sed 's#origin/##' )
                # To delete the branches uncomment the bellow git delete command
                #git push origin --delete ${remote_branch}
        fi
done

echo "Found $count merged branches that have no commits since $date"