I am using duplicity for backups on my Debian servers. I have successfully backed up and restored files using duplicity.
In my backup script, I have /usr/bin/dpkg --get-selections > /installed_packages_<hostname>
so that I can backup the package list for an easy restore of all installed packages.
Considering all packages get the default package maintainer's version of the configuration, is it possible to tell duplicity to overwrite the destination files and folders? Essentially, is it possible to overwrite /
with yesterday's full/incremental backup?