This document provides instructions for downloading, compiling, and installing Ruby 1.9.2 on an Amazon EC2 instance. It involves using wget and tar to download and extract the Ruby source code, running configure and make to compile it, and installing Ruby while renaming existing Ruby binaries and creating symlinks to the new versions. Finally, it checks that tools are now using the new Ruby version.

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26. wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.2-p290.tar.gz
tar xzf ruby-1.9.2-p290.tar.gz
cd ruby-1.9.2-p290
./configure --enable-shared --program-suffix=192
make
sudo make install
sudo su -
mv /usr/bin/ruby /usr/bin/ruby187
mv /usr/bin/irb /usr/bin/irb187
mv /usr/bin/erb /usr/bin/erb187
...
ln -s /usr/local/bin/ruby192 /usr/bin/ruby
ln -s /usr/local/bin/rake192 /usr/bin/rake
ln -s /usr/local/bin/gem192 /usr/bin/gem
...
sudo su -
cd /opt/aws/bin
grep -n ruby *
vi ec2-ami-tools-version
# ruby ruby187
vi ec2-bundle-image
vi ec2-bundle-vol
...
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