Use a text editor. First find out what files are in your .blah_blah file w/
ls -l /home/user/.blah_blah/files.filetype.
Also: I found this info. in a book I was reading, "Mastering Ubuntu Server, (LaCroix 2018)."
The web developer creates the website and related files
These files are uploaded to the Ubuntu Server, typically in a subdirectory of /var/www or another directory the administrator has chosen
The server administrator creates a configuration file for the site, and copies it into the /etc/apache2/sites-available directory
The administrator enables the site and reloads Apache
This cmd should show you the files in that dir.
P.S. If that does not work, try sudo. If you just need to find your . files or your "invisible files," try
ls -l /home/user/. Also, try to add the correct permissions to your file that you need to add so you can read/write to it. This may help.