Fatal error, prohibition sign

[fbe]

Good morning everyone. Or Good evening.

I'll try to be brief: I was working with the terminal and I wrote

sudo mv /usr/local/bin/FOLDER/* /*

or (I don't remember)

sudo mv /usr/local/bin/FOLDER/* /..

I wanted to move some executables. The system blocked, I thought well to force it to stop (holding the shut down button). When I turned it on.. I saw the signal: prohibition.

I tried to reset NVRAM/PRAM but nothing happened. Tried safe boot. Nothing.

Is there hope? Is there a solution? From the bootcamp windows on the same mac I cannot see the usual folders anymore. What I can see in the Macintosh hard disk, are the following folders:
bin
dev
home
net
private
tmp(file)
var(file)


Thank you. sob