@BarryK, as my Nvidea graphics card is a passive one (w/o fan) I was really interested in the GPU temperature while running EasyOS 3.4.3 .
This little shell script will tell me the temperature right away.
#!/bin/bash
echo $(cat /sys/devices/pci0000:00/0000:00:01.0/0000:06:00.0/hwmon/hwmon1/temp1_input|awk '{print $0/1000 "°C"}')
You can use 'pfind' with 'hwmon*' to find the path to the GPU core data file of your graphics card if available.
Run this script in the console and you will know the temperature.