$ sudo apt-get remove douf00 

Uninstall douf00 including dependent package

If you would like to remove douf00 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove douf00 

Use Purging douf00

If you use with purge options to douf00 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge douf00 

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove douf00 

See Also,