#!/bin/bash
# Read DS 1820 temperature sensors.
# usage ./ReadDS1820 <sensor-id>
# e.g.  ./ReadDS1820 28-00000533f61a
temp=`cat /sys/bus/w1/devices/$1/w1_slave | tail -n1 | cut -d '=' -f2`
let value=temp/1000
let remainder=temp-value*1000
printf "%d.%d\n" $value $remainder
