RVM doesn't switch Rubies

Question

I\'m running Ruby 1.9.1p243 on CentOS, and I decided to install rvm to handle upgrading to 1.9.2 or downgrading to 1.8.7 (whichever turns out to work better for rails3).

Answer 1

I've been struggling with setting default rvm ruby to no avail, until I've tried this:

sudo bash -l -c 'rvm alias create default ruby-1.9.3-p392'

"sudo" is for writing into /usr/local/rvm/config/alias (in my example it would contain "default=ruby-1.9.3-p392")
"bash -l" is to make sure it runs all the scripts (/etc/profile, /etc/bash.bashrc, etc..) of login shell