What is a symbolic link made from? Understanding the structure of symlinks

I use Ubuntu 15.10 and I’m very new in Linux. After reading in Wikipedia what is a symbolic link in general, and after executing a symlink creation command in the Ubuntu Unix-bash terminal, I ought to better understand the structure of a symlink I worked with several times when creating (and “destroying”) Ubuntu learning environments.

Apache can’t access file while is has permission

I don’t want to allow others read access, so I have added my user and the apache user to a group called apachme and then set that group to all the files and folders I want apache to have access to, including the root of the webpage. I have then given group and owner all permissions. After this apache still can’t access the files without setting the read permission to allow all(rwxrwxr--(0774)).

Can I easily make a host “mirror” that caches downloaded Debian packages?

We’ve got a Squid web cache set up that is used for caching package downloads, so that all the machines here don’t have to independently redownload everything. The installer prompts for a mirror and proxy. As long as every machine uses the exact same mirror (here, http.us.debian.org) and the proxy then it works.