case "$ACTION" in
  post)
    if [ "$UPDATE" = "no" ]; then
      echo "--> To run fish, type 'fish' in your terminal."
      echo "--> To set your colors, run 'fish_config'"
      echo "--> To scan your man pages for completions, run 'fish_update_completions'"
      echo "--> To autocomplete command suggestions press Ctrl + F or right arrow key."
      echo "--> To use fish as your login shell, run 'chsh -s /usr/bin/fish"
    fi
    ;;
esac
