How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?

Question

My current version of ruby is ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-darwin10.5.0] but I want to update it to the latest patch level using rvm. How can I

Answer 1

like this:

rvm update; rvm reload
rvm install ruby-1.9.2-p136 
rvm --default ruby-1.9.2-p136

Answer 2

Upgrade ruby interpreter and keep existing gemsets:

$ rvm upgrade 1.9.2-p0 1.9.2
Are you sure you wish to upgrade from ruby-1.9.2-p0 to ruby-1.9.2-p136? (Y/n): Y

To replace with the latest stable release of 1.9.2. This avoids clutter.

Some additional helpful tips, thanks to comments (@Mauro, @James, @ACB)

$ rvm list known
# NOTE: you probably want to upgrade your rvm first, as the list of known rubies seems to be coupled to the rvm version.
$ rvm get stable
$ rvm list known #pick your ruby