bashrc with git and rvm version in terminal

bashrc

# Returns "*" if the current git branch is dirty.
function parse_git_dirty {
  [[ $(git diff --shortstat 2> /dev/null | tail -n1) != "" ]] && echo "✘"
}

# print rvm version
function rvm_version {
  [[ -z "${PWD//*\/var\/www\/*/}" ]] && echo "($(~/.rvm/bin/rvm-prompt v g))"
}

# Returns "|shashed:N" where N is the number of stashed states (if any).
function parse_git_stash {
  local stash=`expr $(git stash list 2>/dev/null| wc -l)`
  if [ "$stash" != "0" ]
  then
    echo "|stashed:$stash"
  fi
}

# Get the current git branch name (if available)
git_prompt() {
  local ref=$(git symbolic-ref HEAD 2>/dev/null | cut -d'/' -f3)
  if [ "$ref" != "" ]
  then
    echo "($ref$(parse_git_stash))"
  fi
}

if [ "$color_prompt" = yes ]; then
    PS1='\[\033[01;34m\]\W\[\033[00m\]\[\033[01;32m\]$(git_prompt)\[\033[00m\]\[\033[00;33m\]$(rvm_version)\[\033[00m\]\[\033[01;31m\]$(parse_git_dirty)\[\033[00m\] $ '
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\ $ '
fi