How to check which version of Rails is installed?

[JohnSaunders]

I installed Ruby on Rails on my PowerMac G5 a few months ago and was wondering how to check which version is running? If it's not current, can someone tell me how to upgrade or point me to a site that explains this?

[IAIHMB]

There are a few ways, from a terminal you could type "gem list". Or you could create a Rails project, and then look at environment.rb.

[Josti]

Type in terminal:

rails -v

[pjleonhardt]

type:

gem update rails --include-dependencies
or
yes | gem update rails

in terminal to update.