Check the link in these commands some are not working like sudo apt-get moo is working while other are not!
https://trainings.boltiot.com/courses/429176/lectures/6656409
Check the link in these commands some are not working like sudo apt-get moo is working while other are not!
https://trainings.boltiot.com/courses/429176/lectures/6656409
Try without sudo.
Also, these are just easter eggs.