From Wsms

dpkg-reconfigure is a command line that reinitializes configuration file for Debian packages. It is present on Debian derivatives such as Ubuntu and Linuxmint

common usage

Reconfigure the xserver package, rewriting /etc/X11/xorg.conf:

root@roosevelt:~# dpkg-reconfigure -phigh xserver-xorg
...

see also

man dpkg-reconfigure

dpkg

apt-get