check_pi_temp

#!/bin/bash
#
# check_pi_temp: Check Raspberry Pi temperature
#

temp_input=$(cat /sys/class/thermal/thermal_zone0/temp)

temp=$(($temp_input/1000))

while getopts w:c: option
do
        case "${option}"
        in
                w) thresh_warn=${OPTARG};;
                c) thresh_crit=${OPTARG};;
        esac
done


if [ $temp -ge $thresh_warn ] && [ $temp -le $thresh_crit ]; then

        echo "WARNING - CPU: $temp °C | 'CPU Temperatur'=$temp;$thresh_warn;$thresh_crit"
        exit 1

elif [ $temp -ge $thresh_crit ]; then

        echo "CRITICAL - CPU: $temp °C | 'CPU Temperatur'=$temp;$thresh_warn;$thresh_crit"
        exit 2

elif [ $temp -lt $thresh_warn ]; then

        echo "OK - CPU: $temp °C | 'CPU Temperatur'=$temp;$thresh_warn;$thresh_crit"
        exit 0

else

        echo "UNKNOWN - No Data"
        exit 3

fi