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How to find out Raspberry Pi GPU and ARM CPU temperature on Linux

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You can find out the temperature of the GPU and ARM CPU on a Raspberry Pi running Linux by using the vcgencmd command.

To display the GPU temperature:

vcgencmd measure_temp

To display the ARM CPU temperature:

cat /sys/class/thermal/thermal_zone0/temp

The output will be in Celsius. To convert to Fahrenheit, multiply the temperature by 9/5, and add 32.