Linux: Dell Laptop Fan Control And Get CPU Temperature

I have installed Debian or Ubuntu Linux on Dell Inspiron / Latitude / Precision / Vostro laptop. How do I see the current CPU temperature? How do I control and see fan status on Dell laptop? You need to use the i8kfan and sensors commands to get the following information on Dell laptop powered by Linux operating systems: Cpu temperature Left or right fan status Left or right fan speed Ac power status Fn buttons status