Problems with nginx installation and compilation.
Background description:
When installing nginx with root, why do you need to create a www user? At first, I thought that only the www folder can be accessed after nginx is installed, but I found that the root folder can also be accessed (even if the top configuration If the root in the file is / and there is an html file), then what is the use of creating a www user? I have this question and I want to ask everyone.
