Menu rapido [instalacao e execucao]

#!/bin/bash

clear
echo -e "\033[01;34m -------------------- \033[01;37m"
echo -e "\033[01;35m          \033[01;37m"
echo -e "\033[01;34m -------------------- \033[01;37m"
echo ""
echo -e "\033[01;33m [1] Executar \033[01;37m"
echo -e "\033[01;34m [2] Instalar \033[01;37m"
echo ""
echo -e -n "\033[01;36m - Opc: \033[01;37m"
read opc

# Estrutura de escolha
case $opc in

1)
    clear
    echo -e "\033[01;34m\n  ----- Execucao ----- \n\033[01;37m"

        ;;

2)
    clear
        echo -e "\033[01;35m\n  ----- Instalacao ----- \n\033[01;37m"

    # Estutura de decisao: Analisar se o arquivo existe
    if [[ -r / ]]
    then
        echo -e "\033[01;33m\n # Diretorio existente \n\033[01;37m"

    else

    fi

        ;;

*)
    ;;

esac