get Raspberry Pi temperature

The temperature can be read directly from a sensor on the RPi, in this file:

# cat /sys/class/thermal/thermal_zone0/temp
50306

As you can see it comes in milli-degrees Celsius. Use awk to convert it to degrees:

# awk '{print $1/1000 " C"}' /sys/class/thermal/thermal_zone0/temp
50.843 C
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