[Script] ObtenerDigitoVerificadorCedula

#! /bin/bash
#

mult=(2 9 8 7 6 3 4)

clear
read -ep $'\n\t CI: ' ci

for (( i=0; i < 7; i++ )); do
    n=${ci:${i}:1}

    let "n *= ${mult[${i}]}"

    let "suma += $n"
done

digito=$( echo "scale=1; $suma / 10" | bc | cut -d '.' -f 2 )

if [[ $digito -gt 0 ]]; then
    digito=$[ 10 - digito ]
fi

echo -e "\n\t D. Verificador: $digito \n"