Hello.
I found a little issue at check_rpi_temp.sh. My Raspberries are set to german, systemwide (as far as I remember, I did it via raspi-config). When running check_rpi_temp.sh I get the message:
./check_rpi_temp.sh: Zeile 95: printf: 51.5: Ungültige Zahl.
It seems that printf depends on the language settings, so while this is set to german, it expects 51,5, not 51.5
When putting the following at the upper part of the script, it works fine:
check_rpi_temp.patch.txt
Greetings
René