Note that the actual sequence is 3 characters (newline, tilde, question mark). If you try ~? after anything except a newline, ssh won't intercept it (this is tr

Note that the actual sequence is 3 characters (newline, tilde, question mark). If you try ~? after anything except a newline, ssh won't intercept it (this is true for all ssh tilde escapes). Telnet had something similar.