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

Your install is as root account. Try this in shell [[ -s "/usr/local/rvm/scripts/rvm" ]] && . "/usr/local/rvm/scripts/rvm"

before rvm switch operation. I add this line in my profile file and now all is ok.