Script to rename files recursively easily

renameContratos.sh

LOCALPATH=$(pwd)
OPTIONS="Renomear Cancelar"
select opt in $OPTIONS; do
        if [ "$opt" = "Cancelar" ]; then
                echo "Cancelado";
                exit
        elif [ "$opt" = "Renomear" ]; then
                break
        else
                echo "Escolha desconhecida"
        fi
done
echo "Renomeando..."
rename -e "s/^\D+0*(\d+)-(\d+).*$/\$1/i" *
echo "Adicionando zeros na frente das pastas com nome menor que 10..."
rename -e "s/^(\d)$/0\$1/" *
for entry in "${LOCALPATH}"/*
do
  cd "$entry"
  rename -v -e "s/^CONT\D+(\d+)-(\d+)[^.]*\.pdf$/CONTRATO \$1.\$2.pdf/" *
done