= select
<code bash>
#!/bin/bash
OPCIONES="Hola Salir"
select opt in $OPCIONES; do
	if [ "$opt" = "Salir" ]; then
        	echo done
                exit
	elif [ "$opt" = "Hola" ]; then
        	echo Hola Mundo
        else
                clear
                echo opción errónea
        fi
done
</code>