How to remove RUBY, GEM, RVM completely in ubuntu?

Hi, guys ,

i installed several version of the ruyb, gem, i want to remove all of
them, and install just one version, how to do that ?

many thanks, welcome any advises.

Generally RVM is installed in ~/.rvm.
Do you tried this http://stackoverflow.com/questions/3558656/how-to-remove-rvm-ruby-version-manager-from-my-system ?

Sorry. My native language is portuguese.

I want say:
Did you tried this http://stackoverflow.com/questions/3558656/how-to-remove-rvm-ruby-version-manager-from-my-system ?

gem clean

This will uninstall all the older versions.