Whilst using MODX Revolution, it is very likely that at some point you will have to copy your setup from one folder to another, or even from one server to another. Here is a straight forward way to make such a move.
MODX Revolution is regularly updated with new features and security patches. But the process of updating can be rather fiddly. Here is a straight forward way of updating MODX to the current version on your Linux web server using SSH.