Scripting to automate DRC, LVS ,QRC and post layout simulation

I have the skill file for the layout of a simple inverter chain. Do anybody have any idea how to do the DRC, LVS checks for the layout and thereby do the extraction followed by post layout simulation to get the AC response through a script?? There are ways to get the ac responses for schematics from OCEAN scripts. So is it possible to write scripts that can automate the layout related processes such as the DRC LVS QRC and post layout simulation getting the ac responses as the output. The input file beiong the skill file for the layout...