Ubuntu和Ironpython：要添加到sys.path的路径以及如何导入fcntl模块？

I have latest IronPython version built and running in Ubuntu 14.04 through Mono. Building Ironpython and running with Mono seems trivial but I am not convinced I have proper sys.paths or permissions for Ironpython to import modules, especially modules like fcntl. I have latest IronPython version built and runn