remove old remote git branches interactively

git-remove-old-branches

#!/bin/sh

git fetch

for branch in `git branch --remote --merged origin/master | sed 's/ *origin\///' | grep -v ' ' | grep -v 'master$'`
do
    MERGE_EPOCH=$(git --no-pager log -1 --pretty='%ct' $(git merge-base origin/master origin/$branch))
    CURRENT_EPOCH=$(git --no-pager log -1 --pretty='%ct' origin/master)

    if [ $(expr $(expr $CURRENT_EPOCH - $MERGE_EPOCH) / 60 / 60 / 24) -ge 14 ]; then
        echo "$branch was merged $(git --no-pager log -1 --pretty='%ar' $(git merge-base origin/master origin/$branch))"
        echo

        git --no-pager log -3 --pretty='format:  %Cblue%h%Creset (%Cgreen%ar%Creset) %an %s' --no-merges origin/$branch
        echo
        echo

        /bin/echo -n "git push origin :$branch? [y/N] "
        read reply
        echo

        if [ "$reply" == 'y' -o "$reply" == 'Y' ]; then
            git push origin :$branch
            echo
        fi
    fi
done