I’ve been using linux for more than a decade at this point, but in all that time I’ve rarely had a disk drive. The fact that this command exists and is just, one of the core utils included with your distro along with su and kill and mount and more is just… so beautiful. 10 years amore with this OS and I’m still learning things that the elders in the audience are snickering at me for only learning 5 minutes ago while they were popping their disk trays open with a single command back when disk drives were a non optional component.
Very helpful command it was for those, whose modem had to be rebooted daily back in the day: Have a cron-job open the tray, which in turn was placed strategically so that it would hit the reset button of the modem, then close the tray. And voilà; automatic reboot of the modem. Robotics at its finest!