Using rbenv doesn't work with sudo?

Question

Any commands that use sudo don\'t seem to work with RBenv.

I\'m trying to install ActiveRecord and it says I don\'t have write permission, so when I try

Answer 1

I realise this is kind of old now, but this may help people in future:

rbenv-sudo is a plugin for rbenv that allows you to run rbenv-provided Rubies and Gems from within a sudo session.

https://github.com/dcarley/rbenv-sudo