Thanks for your quick and explanatory responses. >From your answers I realized something. GNU/Hurd is lacking of some power users and guide something like users guide or system administrators guide on the system.
>From now on I am working on writing a detailed users guide for beginners and I hope it will be in enough detail for power users too. When the project comes to a shape I will also manage a web site and I will tell the URL in the list.. I will be happy if you could pass me any information that you think should be in GNU/Hurd users guide. Regards Umut Gokbayrak
