Linux programme to show me how much the fans are running?

I can use lm_sensors to tell me the tempature of various things on my laptop. And sometimes I can hear the fans starting up. Is there anything that will show me how fast various fans on my system are spinning?

What you might be looking for is fancontrol – it works in conjunction with lm_sensors to regulate the speed of your fans using pwmconfig

Here are some ubuntu specific docs on GKrellM in X and another ubuntu post with some useful CLI links

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