Bash Prompt with Ruby version, Rails version, folder info, branch name and branch status

bash_prompt

function _git_prompt() {
  local git_status="`/usr/local/git/bin/git status -unormal 2>&1`"
  if ! [[ "$git_status" =~ Not\ a\ git\ repo ]]; then
    if [[ "$git_status" =~ nothing\ to\ commit ]]; then
      local ansi=32
    elif [[ "$git_status" =~ nothing\ added\ to\ commit\ but\ untracked\ files\ present ]]; then
      local ansi=33
    else
      local ansi=35
    fi
    if [[ "$git_status" =~ On\ branch\ ([^[:space:]]+) ]]; then
      branch=${BASH_REMATCH[1]}
      test "$branch" != master || branch=' '
    else
      # Detached HEAD.  (branch=HEAD is a faster alternative.)
      branch="(`git describe --all --contains --abbrev=4 HEAD 2> /dev/null ||
          echo HEAD`)"
    fi
    echo -n '\[\e[0;37;'"$ansi"';1m\]'"$branch"'\[\e[0m\] '
  fi
}

function ruby_version() {
  rvm current
}

function rails_version() {
  rails=$(rails --version | grep '^Rails [0-9]')
  if [ "$?" == "0" ]; then
    echo $rails
  else
    echo "No rails"
  fi
}

function _prompt_command() {
  PS1='\[\e[0;23m\]`ruby_version` \[\e[0;23m\]`rails_version`  \[\e[0;31m\]\w \[\e[0m\]'"`_git_prompt`"'\n\$ '
}

PROMPT_COMMAND=_prompt_command

Just copy to your .bash_profile, you can see the screenshot here http://cl.ly/image/04463g1L3H1T