Hey guys, i also posted this question into the wiki, because i don´t know where it definately belongs (perhapps ask here, and if i will get succesfull answer post the answer to the wiki? :D):
In chapter 1.3 the books shows this second line for installing rails on linux:
sudo apt-get install ruby irb rubygems ruby1.8-dev
I guess this will install ruby version 1.8.x, is that right? What would be the correct command to install the latest ruby version?