From: Jonathan Hudson <jh+ruby-lang@...>
Date: 2008-04-18T03:10:10+09:00
Subject: Re: Windows, Net::SSH: how do I send a password to sudo?

On Thu, 17 Apr 2008 12:48:03 -0500
James Dinkel <jdinkel@gmail.com> wrote:

> I'm establishing an ssh connection and then I want to run a command as
> sudo.  Now, normally, the user will be prompted to put in a password to
> run the command as sudo.
> 
> Here is my script:
> -----------
> Net::SSH.start( 'files02', 'myuser', 'mypassword' ) do |session|
>   session.open_channel do |channel|
>     channel.on_data do |ch, data|
>       puts data
>     end
> 
>     channel.exec "sudo echo \"hello\""
> 
>   end
> 
>   session.loop
> end
> ------------
> 
> But this doesn't prompt for a password ( not surprisingly ) and of
> course doesn't run the command.  Any ideas on how I could get the
> password prompt to the user?

a. Add user / command to /etc/sudoers, so a pasword is not required;

b. Ask for the password in your script, and then
 channel.exec "echo #{password} | sudo -S echo \"r00ted\"".

In the latter case, don't blame me when you later suffer from a severe
case of unexpected local user privilege escalation. 

-jh