Check cpu temperature and control fan of Thinkpad in Debian

Check cpu temperature

apt-get install lm-sensors

sensors-detect

sensors

Control fan speed

echo level [LEVEL] > /proc/acpi/ibm/fan

Fan levels :

0,fan off
2, low speed
4, medium speed
7, maximum speed
auto, automatic (default)
disengaged, disengaged

More info : http://www.thinkwiki.org/wiki/How_to_control_fan_speed