Install Arduino IDE 1.8.9 on Ubuntu 18.10

This video show how to download and install Install Arduino IDE 1.8.9 on Ubuntu 18.10 (over VirtualBox/Windows 10)
Install Arduino IDE 1.8.9 on Ubuntu 18.10 and set permission for serial port https://arduino-er.blogspot.com/2019/04/install-arduino-ide-189-on-ubuntu-1810.html

updated:
Install Arduino IDE 1.8.13 on Ubuntu 20.04 https://www.youtube.com/watch?v=Z8aYYSk4i9o

source

ubuntu download