I'm trying to edit some files specifically for NGINX as I'm setting up PHPMyAdmin on a different port so that it doesn't clash with the web-gui of OMV. I need root privileges so I've created a user and set all privileges to it. I can access the root directory perfectly fine and download files to my desktop. However, I believe I'm only accessing this as read-only because I can not overwrite the files on the server when I'm uploading the amended files.
Any idea how I can gain full privileges to user and/or group?