Here,I have successfully got simulation result of CMOS Nand gate circuit.Initially,i designed CMOS Nand gate circuit by the help of nmos,pmos,ports,wires,gnd etc,and its necessary to have the circuit errorfree,then we need to generate netlist.Open .cir file in notepad and after unziping the sky130, the file should be edited by replacing the components with sky130_fd_pr.Run the circuit with ngspice.Thus,i got NAND gate result.