#!/bin/ksh

(( warn = 91 ))
(( crit = 95 ))

[[ ! -x `whence sensors` ]] && echo "TEMPERATURE UNKNOWN - install lm_sensors && exit 3
[[ ! -x `whence awk` ]] && echo "TEMPERATURE UNKNOWN - awk executable not found && exit 3

cpu_temp=`sensors | grep ^Tctl: | awk '{print $2}' | sed 's/[^[:digit:]+.]//g'`
#hdd_temp=`sensors | grep ^Composite: | awk '{print $2}' | sed 's/[°C]//g'
temp=$cpu_temp

if [[ -z $temp ]]; then
	echo "TEMPERATURE UNKNOWN - temp variable empty"
	exit 3
elif (( temp >= crit )); then
        echo "TEMPERATURE CRITICAL - $temp C |$temp"
        exit 2
elif (( temp >= warn )); then
        echo "TEMPERATURE WARNING - $temp C |$temp"
        exit 1
elif (( temp < warn )); then
        echo "TEMPERATURE OK - $temp C |$temp"
        exit 0
else
	echo "TEMPERATURE UNKNOWN - $temp |$temp"
	exit 3
fi

# https://www.pcgamer.com/amd-views-ryzen-5000-cpu-temperatures-up-to-95c-as-typical-and-by-design/
# https://superuser.com/questions/1544400/safe-sustained-operating-temperatures-on-cpuryzen9
# https://www.buildcomputers.net/amd-cpu-temperature.html