Here’s a few that I know of. What other things are commonly running Linux that most people may but be aware of?
- Ingenuity (helicopter drone on Mars)
 - Smart TVs and streaming devices (Samsung’s TizenOS and Roku devices)
 - Smart appliances (Samsung’s smart refrigerator)
 - Digital signs and billboards
 - My car stereo (Sony XAV-AX6000)
 - The Large Hadron Collider
 - FAA Air traffic control and radar systems
 - Self driving cars
 


Passenger information systems in public transport. Some might run some kind of embedded windows, but most run on Linux. Certainly here in Czechia, but I believe it’s common at east throughout the Central Europe.