gitprompt.sh

# prompt
export PS1="[\u@\h:\w]\[\e[1;32m\]\$(current_git_repository)\[\033[0m\]\$ "

# function used in prompt
function current_git_repository {
    local branch=`git branch 2>/dev/null | grep ^\* | cut -b3-`;
    local star='';
    if [ "$branch" != '' ]; then
        [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && star='*' || star='';
        echo "[$branch$star]"
    fi
}