Can anyone guide me how to use xyce simulator with xscheme. I have successfully installed xyce on my linux system. But I dont know what to do after that

Assuming that you have installed the device models using the open_pdks installer, you can run Xyce more or less exactly like ngspice. The main difference is that Xyce does not have the interactive interpreter and the use of interactive commands inside a control block, so you will be limited to the old style of just running a single analysis (e.g.,

.tran

) and handling the results with

.save

,

.print

, or

.plot

.