$ sudo apt-get remove rsakeyfind 

Uninstall rsakeyfind including dependent package

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

$ sudo apt-get remove --auto-remove rsakeyfind 

Use Purging rsakeyfind

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

$ sudo apt-get purge rsakeyfind 

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 rsakeyfind 

See Also,