The easiest way to get a CPU temperature readout from Linux is by looking at an ACPI function called temperature:
cat /proc/acpi/thermal_zone/THRM/temperature

You could also try sensors-detect and then sensors, but I had some trouble detecting the correct modules on 8 year old hardware.

About Benjamin Perove

Ben has been associated with a broad spectrum of technologies starting from an early age, and he's contributed to the success of many businesses and enterprises professionally since 2001. Most of his time is spent building cool stuff. When he's not working, he enjoys reading, playing acoustic guitar, and being with friends. He currently resides in Medellin, Colombia.