$ sudo apt-get remove cppman 

Uninstall cppman including dependent package

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

$ sudo apt-get remove --auto-remove cppman 

Use Purging cppman

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

$ sudo apt-get purge cppman 

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 cppman 

See Also,