What level of Linux server management expertise will I need to use cxs?

cxs is foremost a command line utility that is run from the root shell via SSH, cron jobs and application specific scripts. It is aimed at server administrators, not end-users.

You need to be comfortable running shell commands and understanding the construction of Command Line Interface (CLI) applications.

Interpretation of the reports produced by cxs will require a basic knowledge of the Linux OS and various programming languages (especially Perl and PHP).