When experimenting in ruby, sometimes I forget to create a Gemset before I install gems. In which case, the Gems accidentally get install in the default gemset.
Eventually, you’ll end up with a ton of unnecessary gems in the default gemset. You can clean it up using the empty command:
rvm gemset empty ""If you need to clean up another gemset, just add the gemset name in between the qoutation marks. For example:
rvm gemset empty "gemset_name"