Command apt-get --purge can be added to the DPKG command to remove a specified package from the system, including any configuration files used by the package.
Apt-get purge entirely removes the package from your system even configuration files, together with the customized settings and preferences, in contrast to apt-get delete. The root password will be requested; enter it and hit Enter. Every time a prompt appears, enter Y to confirm your decision.
The Debian package management system's low-level foundation is made up of the software known as DPKG. On Ubuntu, it serves as the default package manager. DPKG can be used to install, configure, upgrade, or uninstall Debian packages as well as to get package-related information.
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