[Script] Renombrador

#! /bin/bash
#

clear
read -ep $'\n\t Prefijo: ' prefijo
clear
echo

num=0
dec=0

for file in *g; do
    ext="${file##*.}"
    new_name="${prefijo}${dec}${num}.${ext}"

    mv "$file" "$new_name"
    echo -e "\t Reenombrando ${file} -> $new_name"

    if [[ $num == 9 ]]; then
        num=0
        let dec++
    else
        let num++
    fi
done

echo -e "\n\t Listo! \n"