How to Install Erlang on CentOS/RHEL 7/6

Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. Erlang runtime system has built-in support for concurrency, distribution and fault tolerance. This tutorial will help you to install erlang on CentOS/RHEL 7/6 operating system.

• How to Install Erlang on Ubuntu

Step 1 – Setup Yum Repository

First of all, use the following commands to add Erlang apt repository on RHEL based system. You can simply download erlang repository package from its official website and install on your system.

sudo yum install epel-release
wget https://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm
sudo rpm -Uvh erlang-solutions-1.0-1.noarch.rpm

Step 2 – Install Erlang

Now, you can install erlang package on your system using the following command. This will install all of its dependencies as well.

sudo yum install erlang

Alternatively, you can do the complete Erlang installation. It includes the Erlang/OTP platform and all of its applications.

sudo yum install esl-erlang

Step 3 – Erlang Hello World Program

Let’s start with hello world program on erlang. First create file helloworld.erl with following content.

vi helloworld.erl

add the following contnet.

% hello world program
-module(helloworld).
-export([start/0]).

start() ->
io:fwrite("Hello World!\n").

Now compile the hello world program using below command.

erlc helloworld.erl

The above command will create a file helloworld.beam in the current directory. You can run your program now.

erl -noshell -s helloworld start -s init stop

Hello World!

Reference:
https://packages.erlang-solutions.com/erlang/