Git Squash

gistfile1.sh

function squash {
    commits_to_squash="1"
    commit_message="`git log -1 --pretty=%B`" 

    if [[ -n "$1" ]]
    then
        commits_to_squash=$1
    fi

    if [[ -n "$2" ]]
    then
        commit_message=$2
    fi

    git reset HEAD~$commits_to_squash
    git add -A &&
    git commit -m "$commit_message"
}