Pre-commit hook to warn you if you are committing directly to master.

pre-commit

if [ "$(git rev-parse --abbrev-ref HEAD)" == "master" ]
then 
  exec < /dev/tty
  read -p "You are on the master branch, are you sure you want to commit? (y/N) " -n 1 -r
  if [ "$REPLY" = "" ]; then
    REPLY='N'
  fi
  echo
  if [[ $REPLY =~ ^[Yy]$ ]]
  then
    read -p "Are you really sure? (y/N) " -n 1 -r
    if [ "$REPLY" = "" ]; then
      REPLY='N'
    fi
    echo
    if [[ $REPLY =~ ^[Yy]$ ]]
    then
      echo "Tread lightly...\n"
    else
      echo "Aborted.\n"
      exit 1
    fi
  else
    echo "Aborted.\n"
    exit 1
  fi
fi