View laptop hardware statistics
How can I return the temperatures, fan speeds, etc, using Terminal?
Solution 1:
This website claims to have a free commandline tool to monitor temperature sensors.
http://www.bresink.de/osx/0TemperatureMonitor/details.html
tempmonitor command-line tool
Temperature Monitor
version for the BSD command-line of Mac OS X, temperature sensors only
yes
(Name of tool; part of package download; description; free of charge?)