I’ve found that the easiest and most effective way to backup is with an rsync cron job. It’s super easy to setup (I had no prior experience with either rsync or cron and it took me 10 minutes) and to configure. The only drawback is that it doesn’t create differential backups, but the full task takes less than a minute every day so I don’t consider that a problem. But do note that I only backup my home folder, not the full system.

For reference, this is the full line I use: sync -rau --delete --exclude-from=‘/home/<myusername>/.rsync-exclude’ /home/<myusername> /mnt/Data/Safety/rsync-myhome

“.rsync-exclude” is a file that lists all files and directories I don’t want to backup, such as temp or cache folders.

(Edit: two stupid errors.)

I don’t think “weasel words” is the right term here.

You own the GOG games like you own a book you bought, and like you don’t own a DRM-crippled book, even though you might be entitled to read it under certain circumstances. The difference between downloading an installer and downloading a game on Steam is, the installer will continue to work even if GOG folds or decides they don’t like you anymore. But if Steam blocks your account, all the games you bought are gone, and Steam is fully in the right to do so since you don’t own their games.