how to remove undriven cells in design

how to remove undriven cells and floating inputs from a design using design compiler
what command should i use....
for my design i've more undriven cells and floating inputs, for this getting more leakage power than dynamic power in mW.....
please help me in this regard....
thanks in advance........

put you underiven cells to VCC or Ground

thank u, but how to connect them to Ground/Vdd in synthesis,what is the command for this in design compiler

remove_unconnected_ports -blast_buses [find -hierarchy cell {"*"}]
remove_unconnected_ports [find -hierarchy cell {"*"}]

   thank you

thanks