Consti

I don’t think you need to do anything special here. So long as the client enables TOR on their device (or just the browser), all traffic including WebRTC will be routed through the onion network, like with a VPN. Your server will only see the IP of the exit node.

Of course it won’t do anything, you need to update (refresh the index) before you upgrade (download and install updates), silly you

If you need finer control than recursive chmod (see other replies), you can also use find to match precisely which files/folders you want and use the -exec parameter to run chmod on those