Migrate from https://cmakerhk.wordpress.com/2018/10/17/using-vscode-on-arduino/
https://www.arduino.cc/en/Guide/Linux/
Via Ubuntu Software Center or apt
WARNING!!! THESE INSTRUCTIONS WILL INSTALL AN EXTREMELY OUTDATED AND NON-STANDARD VERSION OF THE ARDUINO IDE. NOT RECOMMENDED!!!!! Open Ubuntu Software Center and search for Arduino. Alternatively, you can install via the command line by running the following in a Terminal
VSCode
F1: Quick Command