Just garbled my system by doing sudo mv /*.mp4 $Downloads/* . Apparently I moved the entire filesystem. I can't even use ls or find. So I can't locate the binaries so I can restore it

[Aragorn]

Try shutting the system down gracefully by using the System Requests, as detailed in the post below…

Seeking advice: Is there a keyboard shortcut to gently reboot from a freeze?

There are a few things you could try, and that you should try first, in this order… Check whether the kernel is still alive by trying to toggle the NumLock key on your keyboard. If the indicator LED does not switch off or on as you press the key, then the kernel’s dead, and then only the reset button on the computer housing will bring solace. If the kernel is still alive — see above — you can try switching to a character-mode login console, also known as a tty. You do this …

Boot up from the live USB, open up a terminal window, and issue the following command…

sudo su -

Mount your root filesystem to /mnt, and look around in there. Then come and tell us what you’ve found. We’ll take it from there.