Reconfigure an already installed package in Debian.
The dpkg-reconfigure command is used in Debian Linux to reconfigure packages after they have already been installed. You can pass one or more package names to this command, and it will re-ask the configuration questions that were asked when the software was first installed.
When a user needs to change the configuration of a package, they can use dpkg-reconfigure.
dpkg-reconfigure (options) (parameters)
-a Reconfigure all installed packages.
-u, --unseen-only Show only questions that have not been asked before.
--default-priority Use the default priority instead of "low".
--force Force reconfiguration. Use with caution.
--no-reload Do not reload templates. Use with caution.
-f, --frontend Specify the debconf frontend to use.
-p, --priority Specify the minimum priority of questions to be displayed.
--terse Enable terse output mode.
Package Name: The name of the installed package to reconfigure.
Reconfigure locales:
sudo dpkg-reconfigure locales