Install sysconftool by entering the following commands in the terminal:
sudo apt update sudo apt install sysconftool
Description:
development tool to install and update configuration files
sysconftool is a development utility that helps to install application configuration files. sysconftool allows an existing application to be upgraded without losing the older version's configuration settings, but that's the advantage over plain dpkg upgrading, will add new configuration settings (and remove unneeded).
Homepage: http://www.courier-mta.org/sysconftool/
Version: 0.17-1
Section: universe/devel