Modified prompt displaying current git branch and radiation symbol if the branch is dirty

git_shell_prompt.sh

function parse_git_dirty {
  [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo -e " \xE2\x98\xA2"
}

function parse_git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/\1$(parse_git_dirty)/"
}

export PS1='\[\033[01;32m\]\w $(git branch &>/dev/null; if [ $? -eq 0 ]; 
then echo "\[\033[01;34m\]$(parse_git_branch)"; fi) \$ \[\033[00m\]'