How to test webcam on Ubuntu 20.04 Focal Fossa - LinuxConfig.org

The objective of this tutorial is to show the reader a quick-start method on how to test Webcam on Ubuntu 20.04 Focal Fossa.
This is a companion discussion topic for the original entry at https://linuxconfig.org/how-to-test-webcam-on-ubuntu-20-04-focal-fossa