rio.sh

#!/bin/bash
while [ 1 ]; 
  do echo -n "RIO cotizacion `date` -----> " ; 
    curl https://banco.santanderrio.com.ar/exec/cotizacion/index.jsp 2> /dev/null | grep -a \<td\> | head -n 3 | cut -d " " -f 2 | cut -d "<" -f 1 | tail -n 1; 
    sleep 30; 
  done;