git-cleanup.sh

#!/bin/bash

set -e

# cleanup a git repo, removing fully merged branches (locally and remotely)
# based on http://devblog.springest.com/a-script-to-remove-old-git-branches

# run from the repo to be cleaned

# TODO: store lists of branches, DRY (don't want list to change after confirm)

COMPARE_BRANCH='master' # branch to compare other branches against

# This has to be run from branch being compared against
git checkout ${COMPARE_BRANCH}

# Update our list of remotes, fetching new, and pruning stale
git fetch
git remote prune origin

# Remove local fully merged branches
# TODO: script will abort here if there are no local branches to remove
echo "The following local branches are fully merged and will be removed:"
git branch --merged ${COMPARE_BRANCH} | \
    grep -v "${COMPARE_BRANCH}\$" | \
    grep -v "master\$"

read -p "Continue (y/n)? "
if [ "$REPLY" == "y" ]
then
        git branch --merged ${COMPARE_BRANCH} | \
        grep -v "${COMPARE_BRANCH}\$" | \
        grep -v "master\$" | \
        xargs -I% git branch -d %
fi

# Show remote fully merged branches
echo "The following remote branches are fully merged and will be removed:"
git branch -r --merged ${COMPARE_BRANCH} | \
    sed 's/ *origin\///' | \
    grep -v "${COMPARE_BRANCH}\$" | \
    grep -v "master\$"

read -p "Continue (y/n)? "
if [ "$REPLY" == "y" ]
then
    # Remove remote fully merged branches
    # TODO: `grep -v "master\$" : skips long-running braches that should remain. add lists
    git branch -r --merged ${COMPARE_BRANCH} | \
    sed 's/ *origin\///' | \
    grep -v "${COMPARE_BRANCH}\$" | \
    grep -v "master\$" | \
    xargs -I% git push origin :%
   echo "Done!"
fi