README.md

Installs 2.1.2 on debian/ubuntu via checkinstall so it's in your package manager and you can remove it.

Quick install:

curl -L https://gist.github.com/mortik/4ea0208b1688097c9549/raw/855840025891f3b7e764bf720026072104c5c3bd/ruby-2-install-debian.sh | bash -s

ruby-2-install-debian.sh

#!/usr/bin/env bash
set -e

sudo apt-get build-dep ruby1.9.1

wget -c http://ftp.ruby-lang.org/pub/ruby/2.1/ruby-2.1.2.tar.gz
tar xzf ruby-2.1.2.tar.gz
cd ruby-2.1.2

./configure
make

sudo checkinstall -y \
  --fstrans no \
  --type debian \
  --install yes \
  --pkgversion 2.1.2 \
  --provides "ruby-interpreter"