I'm running Ubuntu 11.10 and installed Ruby 1.9 like this:
$ sudo apt-get install ruby1.9 rubygems
Everything is working very well but ri
seems to have empty documentations. ri
told me that the documentations were empty and I had to install them. I executed this because I read it would help:
$ rdoc --all --ri
Now, when I try to open any documentations:
$ ri Array
Nothing known about Array
I get the same for everything else I search.
what about this ?
apt-get install ri1.8
EDIT
or try this: (non rvm)
gem install rdoc rdoc-data
rdoc-data --install