How to rip youtube videos from the command line
(itsfoss.com)https://itsfoss.com/download-youtube-linux/Install (ubuntu):
`sudo apt install youtube-dl`
Example:
Download the rick rolled video in mp4 format:
youtube-dl
https://youtu.be/dQw4w9WgXcQ -f mp4
Edit:
This project is NOT dead. It has active pull requests on github and a new release coming out soon:
https://github.com/ytdl-org/youtube-dl 
