Erlang is a programming language used to build massively scalable soft real-time systems with requirements for high availability. The Erlang runtime system has built-in support for concurrency, distribution and fault tolerance.
Table of Contents
Step 1. First let’s start by ensuring your system is up-to-date.
Step 2. Installing Erlang.
Prerequisites
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation Erlang on a CentOS 7 server.
Install Erlang on CentOS 7
Step 1. First let’s start by ensuring your system is up-to-date.
yum clean all yum -y install epel-release yum -y update
Step 2. Installing Erlang.
Before installing Erlang, we need to install the following prerequisites:
yum install gcc gcc-c++ glibc-devel make ncurses-devel openssl-devel autoconf java-1.8.0-openjdk-devel git wget wxBase.x86_64
First, use the following commands to add erlang apt repository on CentOS based system:
wget https://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm rpm -Uvh erlang-solutions-1.0-1.noarch.rpm
Now, you can install erlang package on your system using the following command:
yum install erlang
Run the following command to verify whether Erlang is installed or not:
erl
tep 3. Erlang Hello World Program.
Let’s start with hello world program on erlang. First create file helloworld.erl with following content:
nano helloworld.erl
Add the following content:
% hello world program
-module(helloworld).
-export([start/0]).
start() ->
io:fwrite("Hello World!\n").
Compile the hello world program using below command:
erlc helloworld.erl
Now, run your program using below command:
erl -noshell -s helloworld start -s init stop
Congratulation’s! You have successfully installed Erlang. Thanks for using this tutorial for installing Erlang on your CentOS 7 system. For additional help or useful information, we recommend you to check the official Erlang web site.