Something

#!/bin/bash

while [ 1 ]
do

# Borra pantalla y cursor a home
echo -ne "\f" > /dev/ttyS0

# Temperatura CPU
echo -n "CPU:" > /dev/ttyS0
sensors |grep SYS |cut -d" " -f4  > /dev/ttyS0

echo -ne "\r" > /dev/ttyS0

# Temperatura hda
echo -n "hda:" > /dev/ttyS0
hddtemp /dev/hda | cut -d" " -f5 | tr "\n" "  "> /dev/ttyS0

# Temperatura hdb
echo -n "hdb:" > /dev/ttyS0
hddtemp /dev/hdb | cut -d" " -f3 | tr -d "\n" > /dev/ttyS0

sleep 4
done