Step back to the root of a git repo

gitroot.sh

##Added the following to my .bashrc, thought I'd share
function groot() {

  if [ -d '.git' ]
  then
    echo "I AM GROOT"
  fi

  startDir=${PWD} 
  while [ ! -d '.git' ]
  do
    if [ ${PWD} == '/' ]
    then
      echo 'No gitroot found'
      cd $startDir
      return;
    fi
    cd ..
  done
}