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Full Discussion: Calling a function which uses expect from a shells script
Top Forums Shell Programming and Scripting Calling a function which uses expect from a shells script Post 302570544 by Corona688 on Thursday 3rd of November 2011 02:31:41 PM
Old 11-03-2011
You needed third-party hacking tools to inject passwords into ssh because ssh -- and any sane login like sudo, su, and so forth -- are all explicitly designed to prevent this. It's a small helpful hint, written in mile-high flashing neon letters, that it's a really bad idea.

This is because recoverable text passwords are incredibly difficult to keep safe. Passing them through variables, files, or arguments opens them up to interception in a huge variety of ways.

ssh has a much better alternative built right in: keys. Just having the right files in the right places lets ssh go through fully automatically with no modification to your program. See passwordless ssh.
Last edited by Corona688; 11-03-2011 at 03:37 PM..
 

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LEARN ABOUT DEBIAN

ssh-askpass-fullscreen

SSH-ASKPASS-FULLSCREEN(1)				      General Commands Manual					 SSH-ASKPASS-FULLSCREEN(1)

NAME

       ssh-askpass-fullscreen - A simple replacement for ssh-askpass written with gtk2

SYNOPSIS

       ssh-askpass-fullscreen

DESCRIPTION

       This manual page was written for the Debian distribution because the original program does not have a manual page.

       gnome-ssh-askpass  is  a  GNOME-based passphrase dialog for use with OpenSSH. It is intended to be called by the ssh-add(1) program and not
       invoked directly.  It allows ssh-add(1) to obtain a passphrase from a user, even if not connected to a terminal (assuming that an X display
       is available).  This happens auto-matically in the case where ssh-add is invoked from one's ~/.xsession or as one of the GNOME startup pro-
       grams, for example.

       In order to be called automatically by ssh-add, ssh-askpass-fullscreen should be installed as /usr/bin/ssh-askpass

       ssh-askpass-fullscreen is a program that...

ENVIRONMENT VARIABLES

       The following environment variables are recognized:

       GNOME_SSH_ASKPASS_GRAB_SERVER
			    Causes gnome-ssh-askpass to grab the X server before asking for a passphrase.

       GNOME_SSH_ASKPASS_GRAB_POINTER
			    Causes gnome-ssh-askpass to grab the mouse pointer will be grabbed too.

       These  may have some benefit to security if you don't trust your X server. Keyboard is always grabbed.

       SEE ALSO
	      ssh-add(1), ssh-askpass(1).

AUTHOR

       This manual page was written by Marco Presi (Zufus) <zufus@debian.org>, for the Debian GNU/Linux system (but may be used by others) and	it
       is based on that for x11-ssh-askpass by Philip Hands and the one for gnome-ssh-askpass by Colin Watson <cjwatson@debian.org>

								   May 8 , 2004 					 SSH-ASKPASS-FULLSCREEN(1)
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