$sudo yum install git autoconf gcc gcc-c++ glibc-devel make ncurses-devel openssl-devel unixODBC unixODBC-devel java-1.8.0-openjdk-devel
$sudo git clone https://github.com/erlang/otp.git
$sudo chown ec2-user:ec2-user -R otp/
$cd otp
$sudo ./otp_build autoconf
$sudo ./configure #--prefix=/usr/local/erlang
$sudo make
$sudo make install
vi ~/.bash_profile
PATH=$PATH:/usr/local/erlang/bin
#sudo git clone https://github.com/elixir-lang/elixir.git
#sudo chown ec2-user:ec2-user -R elixir/
$make clean test