Install a ruby 2.0.0 on an Amazon AMI. This is just a quick update to get version 2.0.0 up. We used the current 64 bits Amazon AMI. Note that the complete procedure might take a few hours on a Amazon Micro instance. Deleting the old version of Ruby also removes the package aws-amitools-ec2. As long as you don’t need to create your own AMIs with this instance, you will be fine. Here is the procedure, as usual log in as ec2-user and perform the following from the shell:

Login as root

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sudo su -
cd

Remove the old version of Ruby

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yum remove ruby

Install the dependency packages

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yum groupinstall 'Development Tools'
yum groupinstall development-libs
yum install libffi-devel
yum install libyaml-devel
yum update

After intalling the dependency packages download and install Ruby 2.0.0

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wget ftp://ftp.ruby-lang.org/pub/ruby/2.0/ruby-2.0.0-p195.tar.gz
tar xzvf ruby-2.0.0-p195.tar.gz
cd ruby-2.0.0-p195
./configure
make
make install
make clean
gem update --system
exit
ruby --version (this should give you the newly installed version)

That’s it! Have fun with Ruby!