Thank you both for your replies.
The thing I wanted is to select some files here and there to be either hidden or read-only, just as I do very straightforward in Windows. Just for instance, the ‘desktop.ini’ of the folders inside some Share has to be set as hidden + system file in order to enable the ‘folder customization’ feature of Windows, and I can’t accomplish that through the ‘regular’ ways. Another example, in some others folders there may some less-used files that I always like to hide in order to get a clean workspace, without moving them to other directories.
The issue with this SSH approach is the big risk it envolves, as well as voiding the warranty as I’ve heard…