This is a discussion on Re: rsync through multiple ssh hops with password authentication - Tools ; Matt, Thanks very much. However, for several reasons, I cannot apply that "trick" in my case. Apart from those reasons, there is no X server on middle or target at all. Moreover, which password-prompting program should I use? middle is ...
Thanks very much. However, for several reasons, I cannot apply that
"trick" in my case. Apart from those reasons, there is no X server on
middle or target at all. Moreover, which password-prompting program
should I use? middle is an OpenBSD machine. And what should I put in
Finally, I am not sure if your first paragraph means that this is
impossible and it won't be implemented in rsync.
Thanks anyway for your comments,
Matt McCutchen wrote:
> The trouble in all three cases is that rsync expects to have the SSH
> data stream to "middle" all to itself, but you need to slip a password
> into this stream first so that the connection to "target" can be made.
> Here's what I think would be easiest. If ssh's input is not a terminal,
> but $DISPLAY is set, it tries to use a graphical password-prompting
> program specified by $SSH_ASKPASS. Put such a program on "middle" if
> you don't already have one, and configure "middle" so that $SSH_ASKPASS
> will be appropriately set even though the shell that handles the second
> SSH command will not be a login shell (this means ~/.bashrc or
> ~/.ssh/environment, not ~/.bash_profile). Then, enable X forwarding on
> the connection to "middle". The second SSH will pop up a graphical
> password prompt, which will rattle through the first SSH to your screen.
> This would be the command:
> rsync -e "ssh -X middle ssh target" :/path/to/remote/file .
> However, I consider the following more elegant because the -e argument
> specifies not the remote machine but the way of getting there:
> rsync -e "ssh -X middle ssh" target:/path/to/remote/file .
> I successfully used this technique to pull a file to my computer from a
> computer on my school's network via an intermediary on that network.
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