Raspberry pi temperature

temp.sh

#!/bin/bash

while true; do
  cur_second=`date +"%-S"`
  if (( $cur_second == 0 )); then
    minute=$cur_minute
    echo -n $'\n'`date +"%d.%m.%y %H:%M"`:
  elif (( $cur_second % 10 == 0 )); then
    echo -n ' |'
  fi
  temp=`cat /sys/class/thermal/thermal_zone0/temp`
  echo -n ' '${temp:0:2}
  sleep 1
done