Install RVM on OS X with Brew

I had followed Darkoperator’s Metasploit Framework for Mountain Lion Guide back in July of 2012. After doing a ‘brew update && brew upgrade’ the recent stable release of ruby-2.0.0.p0 breaks ‘msfconsole’. A simply way to resolve this is to remove ruby from Homebrew and install RVM for ruby version management.

ruby -v
brew doctor
brew uninstall ruby
brew remove --force ruby

\curl -#L https://get.rvm.io | bash -s stable --ruby
source /User/<account name>/.rvm/scripts/rvm
cat ~/.bash_profile

rvm install 1.9.3
rvm --default 1.9.3

rvm list
ruby -v

Line 1 shows the current version of ruby. Run Line 2 to make sure ‘Your system is raring to brew.’ Line 3 uninstalls ruby and Line 4 removes the files from the ‘/usr/local/Cellar/’. Line 6 installs RVM with the latest stable version of Ruby. Line 7 loads RVM into the active shell session as a function (replace <account name> with your user account; if you’re not sure .. use ‘whoami’). Use Line 8 to check that RVM will loads automatically when you open a new terminal, otherwise you will have to run Line 7 each time:

[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"

Line 10 installs ruby-1.9.3-p393 and the following line sets the current && default ruby version in the bash prompt to 1.9.3 with the last command verifying the current version of ruby.