$ sudo apt-get remove liberb-ruby

Uninstall liberb-ruby including dependent package

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

$ sudo apt-get remove --auto-remove liberb-ruby

Use Purging liberb-ruby

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

$ sudo apt-get purge liberb-ruby

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 liberb-ruby

See Also,