The program "sensors" gives a list of temperatures for each CPU core, and sometimes other hardware as well depending on the system and installed drivers. We made a nasty-looking list from it in class a few weeks ago. Make a nice looking list like the following:
48.0°C 41.0°C 48.0°C 42.0°C 40.0°C 44.0°C 45.0°C 39.0°C 42.0°C 39.0°C 39.0°C 39.0°C 41.0°C
46.0°C 45.0°C 46.0°C 44.0°C 44.0°C 45.0°C 44.0°C 44.0°C 37.0°C 35.0°C 38.0°C 41.0°C 39.0°C
cut and grep will work for the most part, but at the end, pipe your list into the program named column. Note that the "nice looking" bit above depends on your web browser. Some will render something other than a degree symbol.