ensure we are running in correct directory

[rpi-ds18b20] / w1-ds18b20.sh

#!/bin/sh -e

ls /sys/bus/w1/devices/w1_bus_master*/*-*/w1_slave | while read path ; do
        temp=$( cat $path | grep t= | cut -d= -f2 )
        if [ $temp != 85000 ] ; then # 85 is error
                temp=$( echo $temp | awk '{ printf "%.3f\n", $1 / 1000 }' )
                id=$( echo $path | cut -d/ -f 7 )
                name=$( grep "^$id" id2name.txt | cut -d' ' -f2 )
                echo "$id $name $temp"
        fi
done