Ubuntu offers two options to remove packages. When you remove packages, you only remove the packages, but not their configuration files. Enter the following command to remove a package in a terminal window.
$ sudo apt-get remove packagename <enter>
When you purge packages, you remove the packages and their configuration files. Enter the command below to purge a package in a terminal window.
$ sudo apt-get purge packagename <enter>
After a purge, you should normally do
$ sudo apt-get autoremove <enter>
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