>>140
ああ、 rake は紛らわしかったねごめん

$ rvm use 1.8.7
info: Using ruby 1.8.7 p302
$ rvm 1.8.7 gem install rspec
…
Successfully installed rspec-1.3.0
1 gem installed
$ ls -R .rvm/gems/ruby-1.8.7-p302/
.rvm/gems/ruby-1.8.7-p302/:
cache

.rvm/gems/ruby-1.8.7-p302/cache:
rspec-1.3.0.gem
$ rvm --version
rvm 1.0.5 by Wayne E. Seguin ([email protected]) [http://rvm.beginrescueend.com/]