$ rvmsudo rvm install 1.9.2-p180
Installing Ruby from source to: /usr/local//rvm/rubies/ruby-1.9.2-p180, this may take a while depending on your cpu(s)...

ruby-1.9.2-p180 - #fetching 
ruby-1.9.2-p180 - #extracted to /usr/local//rvm/src/ruby-1.9.2-p180 (already extracted)
Fetching yaml-0.1.3.tar.gz to /usr/local//rvm/archives
Extracting yaml-0.1.3.tar.gz to /usr/local//rvm/src
Configuring yaml in /usr/local//rvm/src/yaml-0.1.3.
Compiling yaml in /usr/local//rvm/src/yaml-0.1.3.
Installing yaml to /usr/local//rvm/usr
ruby-1.9.2-p180 - #configuring 
ruby-1.9.2-p180 - #compiling 
ruby-1.9.2-p180 - #installing 
Removing old Rubygems files...
Installing rubygems dedicated to ruby-1.9.2-p180...
Installing rubygems for /usr/local//rvm/rubies/ruby-1.9.2-p180/bin/ruby
Installation of rubygems completed successfully.
ruby-1.9.2-p180 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
ruby-1.9.2-p180 - #importing default gemsets (/usr/local//rvm/gemsets/)
Install of ruby-1.9.2-p180 - #complete