Which StackExchange website is the best for general non-programming Linux questions? I have some Linux questions that are not directly related to Ubuntu and not related to programming. Does StackExchange have a site for this? Here is a specific example of my issue: What are some of these directories in the Linux kernel src?
unix.se should be exactly what you are looking for.
From the site's description page:
Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems.. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed answers to every question about Unix or Linux.