CPU-Temp NanoPi Duo Welcome-Message

@Igor at the /etc/update-motd.d/30-sysinfo on my armbian debian stretch it didnt show the cpu-temp line after the login

I did take a look at the file /etc/update-motd.d/30-sysinfo and didnt under stand the actual funtion getboardtemp:
 

function getboardtemp() {
        if [ -f /etc/armbianmonitor/datasources/soctemp ]; then
                read raw_temp </etc/armbianmonitor/datasources/soctemp 2>/dev/null
                if [ ! -z $(echo "$raw_temp" | grep -o "^[1-9][0-9]*\.\?[0-9]*$") ] && (( $(echo "${raw_temp} < 200" |bc -l) $
                        # Allwinner legacy kernels output degree C
                        board_temp=${raw_temp}
                else
                        # Marvell gets special treatment for whatever reasons
                        grep -qi Marvell /proc/cpuinfo && \
                                board_temp=$(( $(awk '{printf("%d",$1/1000)}' <<<${raw_temp}) - 20 )) || \
                                board_temp=$(awk '{printf("%d",$1/1000)}' <<<${raw_temp})
                fi
        elif [ -f /etc/armbianmonitor/datasources/pmictemp ]; then
                # fallback to PMIC temperature
                board_temp=$(awk '{printf("%d",$1/1000)}' </etc/armbianmonitor/datasources/pmictemp)
        fi
} # getboardtemp

BUT if I did do it cut down to:
 

function getboardtemp() {
        if [ -f /etc/armbianmonitor/datasources/soctemp ]; then
                # Allwinner legacy kernels output degree C
                board_temp=$(awk '{printf("%.2f",$1/1000)}' </etc/armbianmonitor/datasources/s$

        elif [ -f /etc/armbianmonitor/datasources/pmictemp ]; then
                # fallback to PMIC temperature
                board_temp=$(awk '{printf("%d",$1/1000)}' </etc/armbianmonitor/datasources/pmi$
        fi
} # getboardtemp

I do get a CPU-temp line at the Welcome-Message after the login-screen.
For me it looks like that the mainline-kernel also output degree C (not only legacy like in the commecnt-line).

My NanoPi Duo as Information:
System diagnosis information will now be uploaded to http://ix.io/15r6