  We develop a unified treatment of pumping and nonequilibrium thermodynamics.
We show that the pumping current generated through an adiabatic mechanical
operation in equilibrium can be expressed in terms of the stationary
distribution of the corresponding driven nonequilibrium system. We also show
that the total transfer in pumping can be evaluated from the work imported to
the driven counterpart. These findings lead us to a unified viewpoint for
pumping and nonequilibrium thermodynamics.
