rvm

List the ruby versions console:~$ rvm list rvm rubies ruby-2.0.0-p481 [ i686 ] # => - current # =* - current && default # * - default Try to use a specific version of ruby console:~$ rvm use 2.0.0 RVM is not a function, selecting rubies with 'rvm use ...' will not work. You need to change your terminal emulator preferences to allow login shell. Sometimes it is required to use `/bin/bash --login` as the command. Please visit https://rvm.io/integration/gnome-terminal/ for a example. Your console is not running as a login shell and hence have no access to rvm function. If you are running Ubuntu,

Attempting to install rvm and ruby 1.9.2 I already installed homebrew and git, but couldn't get complete updates because I kept getting permission errors. Re-installed Snow Leopard and repaired permissions. Now this happens... $ brew install wget Error: Cannot write to /usr/local/Cellar Ben Kreeger sudo chown -R $USER /usr/local You'll have to give yourself ownership of /usr/local/ using that line right there. I had to do this myself after using the ruby one-liner at the top of the official docs to install Homebrew. Worked like a charm for me. It ought to be the only time you'll ever need to

I am interested in how RVM and rbenv actually work. Obviously they swap between different versions of Ruby and gemsets, but how is this achieved? I had assumed they were simply updating symlinks, but having delved into the code (and I must admit my knowledge of Bash is superficial) they appear to be doing more than this. Short explanation: rbenv works by hooking into your environment's PATH . The concept is simple, but the devil is in the details; full scoop below. First, rbenv creates shims for all the commands ( ruby , irb , rake , gem and so on) across all your installed versions of Ruby.

When creating a new rails app, I get the following error: /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:799: [BUG] Segmentation fault ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin10.8.0] All the rails files appear to be generated, but the error above is still there. Any thoughts or suggestions would be greatly appreciated. It looks to me like a problem with LLVM GCC, try with GNU GCC. The easiest way to do that is to install osx-gcc-installer and reinstall ruby: rvm reinstall 1.9.3 EDIT2: it is also possible to use gcc-4.2 available via HomeBrew/MacPorts, install

I have just installed the RVM and I am reading The Well-Grounded Rubyist book. In the first chapter I am supposed to try ri String#upcase to view documentation on the upcase method, however I get a message saying: Nothing known about String#upcase I found some posts here on SO telling me that it probably is because RDoc is not installed. However I do not understand how to fix it. I am using Mac OSX 10.6, and latest RVM. I have only installed 1.9.2, in addition to the standard Ruby interpreter which come along with the Developer kit from Apple. Casper Did you generate the docs? rvm docs