Removing Gems errors

Question

I have 2 versions of rubies using RVM and i am trying to remove all my gems which in this ruby version 1.8.7-p302

first i tried this but i got error

Answer 1

RVM installs some gems in the global gemset you can uninstall those gems with:

rvm @global do gem uninstall gem_name

if you do not want to use any gemsets (except the single per ruby gemset) use: this:

echo rvm_ignore_gemsets_flag=1 >> ~/.rvmrc

and from now on RVM will use only single gemset - no global