[CALUG] SSH question

James Ewing Cottrell 3rd JECottrell3 at Comcast.NET
Wed Nov 16 23:19:47 CST 2005

Using DD to back up partitions is a Bad Idea! Pick Something Else!!

And there are several way for SSH to read passwords.

[1] as mentioned, from /dev/tty
[2] thru expect, which simulates /dev/tty with a pty
[3] by using an account with no password
[4] [3] by using an account with .rhosts or .shosts permission
[5] by using a public/private key with no pass phrase
[6] by using ssh-agent

Note that not all of these are good ideas.

The ssh-agent can be started by hand and read by the script on the fly.


Jim Bauer wrote:

>On Thursday 27 October 2005 09:58, Jason C. Miller wrote:
>>Working with Mr. Breen's suggestion of using dd and ssh to backup hard
>>drives, I was wondering if anybody knew off the top of their heads if
>>password-less login is required for this to work.  If I try to pipe some
>>output into ssh (to be processed on the remote machine), does it matter if
>>I manually put in the password or not?
>No.  ssh will read the password from /dev/tty not stdin.
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