DISCLAIMER: This tutorial is more suitable for experienced users. Proceed at your own risk!. If you’re not sure about this, please use another method to get Fedilab (Installation Methods)
Steps provided here are to be used in a Debian/Ubuntu based distributions. For other distributions and operating systems, some of them might be different
Install Java JDK, Git & unzip (First time only) sudo apt-get install openjdk-8-jdk-headless git unzip
JDK (Java Development Kit) is necessary to build Android apps.