Thank you very muuch, Eric. I will check it out. I have another problem when I try to subscribe this mail list. I recevei a confirm mail from cygwin-help@cygwin.com which require me reply a message to cygwin-sc.1430402984.ioahhmmolhnlonjaaoaa-fatmck=163.com@cygwin.com I replied to this address, and nothing happens, it seems that I am not in the mail list. What should I do to solve this? -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple