Filesystems

Querying the system packages revealed some new locations on the filesystem. We worked with /etc, where we put the server configuration for SSH, /var where we found the DNF cache and /usr/share where we place files for the web server. But what are these locations about? And where should we put the application files during deployment? Apart from the filesystem layout questions, we should be able to tell what filesystems are and know how to keep an eye on the amount of disk space left.