for file in *.nc; do
    if ncdump -h "$file" | grep -q -E "(variables:|data:)" && [ $(ncdump -h "$file" | grep -E "(variables: |dimensions:)" | wc -l) -gt 1 ]; then
        echo "CON DATOS: $file"
    else
        echo "VACÍO: $file - ELIMINAR"
    #   rm "$file"
    fi
done