Install Java

Before running Core, you will need to install Java.
Unimus Core is written in Java, and requires a JRE (Java Runtime Environment) to run.

How to install Java depends on your particular OS / distro.
However, please make sure you install Java 8 or 11 for Unimus version 2.5.0 or older. Java 17 is supported starting from version 2.5.1. (as mentioned above, JRE is sufficient, Unimus does not need the JDK).

Download Unimus Core

Unimus Core is available as a platform-independent .jar distribution.

Download link:
https://unimus.net/download.html

The .jar binary is a standard Java application package.
You can run it on any OS / distro / architecture that support Java.

This could be considered a portable (standalone) deployment - you simply run Unimus and it will work.
There is nothing to install, Unimus will not install itself as a service, it will only run when you launch it yourself.

Running Unimus Core using the .jar

Before running the Core, you will need to create the config file manually.

Please create the file in: /etc/unimus-core/unimus-core.properties

unimus.address=some.server.address
unimus.port=5509
unimus.access.key=really_long_access_key_from_the_zone_of_this_core

After the config file is in place, you can run the .jar file directly. Open a terminal, and run:
java -jar unimus.jar

You should see the Core outputting its startup sequence into the terminal (stdout).
The Core should start, and you should see your Core online in Unimus.