amnesia@amnesia:~$ sudo iptables -I OUTPUT 2 -p tcp -d 127.0.0.1 -m tcp --dport 18081 -j ACCEPT

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

[sudo] password for amnesia:
amnesia@amnesia:~$ sudo iptables -I OUTPUT 2 -p tcp -d 127.0.0.1 -m tcp --dport 18081 -j ACCEPT
[sudo] password for amnesia:
amnesia@amnesia:~$ DNS_PUBLIC=tcp torsocks ./monerod --p2p-bind-ip 127.0.0.1 --no-igd --rpc-bind-ip 127.0.0.1
>     --data-dir '/media/amnesia/My Passport/Blockchain'
ERROR: ./monerod cannot be found.
amnesia@amnesia:~$