sailavu

#!/bin/bash
# from here: http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
# and here: https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
###############################################
# To use: 
# wget https://gist.githubusercontent.com/sailavu/3b280bfdb95ab65ae23a/raw/1a4d24fb0b0a32a47da042f8a63b30047c1a7d42/install-redis.sh
# chmod 777 install-redis.sh
# ./install-redis.sh
###############################################
echo "*****************************************"

sailavu

#!/bin/bash
# from here: http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
# and here: https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
###############################################
# To use: 
# wget https://gist.github.com/sailavu/6129465/raw/5e4ebf3e56aeacae7575c1ff19297dcc2b79dd81/install-redis.sh
# chmod 777 install-redis.sh
# ./install-redis.sh
###############################################
echo "*****************************************"

sailavu

Install rbenv and ruby-build to Amazon Linux (cloud-init).

1. Copy & paste content of user-data.sh to EC2 RunInstances user-data
2. Then, logging in to EC2 instance as ec2-user and run install-ruby.sh.

sailavu

Install rbenv and ruby-build on Ubuntu.

sailavu

# Update, upgrade and install development tools:
sudo su -
yum update
yum install rpmdevtools
yum groupinstall "Development Tools"
yum groupinstall development-libs
yum install zlib-devel
yum install gcc
yum install gcc-c++
yum install make