From: Eric Hodel <drbrain@...7.net>
Date: 2007-08-19T05:39:56+09:00
Subject: Re: need help. want to use Net::sh to do sudo command

On Aug 18, 2007, at 02:35, wbsurfver@yahoo.com wrote:

>
>  I want to do a sudo command to change permissions on our server
> because our admin has some kind of build
> that blows away the image directory and it ends up having the wrong
> permissions after the build.
> When the sudo command is run it will prompt for a password and I need
> to write the password to it. If I just write to the stream before it
> prompts, I'm not sure if it will work ? Also if someone could give me
> the exact stuff that they think will work, that would be helpfull as I
> am concerned if I play with it and have failed attempts it might lock
> my account. I want to be able to email the group and say, 'hey here is
> a script that runs every 10 minutes from my pc and fixes the build
> problem", If possible, I don't want the admins to be upset with me for
> getting my account locked because I was playing around. Our server
> runs linux, thanks. Below is sort of what my script would do, but the
> password part is missing. As I said, it may be an easy thing, I'm just
> affraid of getting it wrong ...
>
> ---------------------------------------------------------------------- 
> -
> require 'net/ssh'
>
> host = 'myhost.frog.surf.com'
>
>
> Net::SSH.start( host,
>                 :password=>'candy',
>                 :port=>22,
>                 :username=>'ljkid'
>        ) do |session|
>        cmd = 'sudo chmod 777 /apps/mystuff/images'
>        session.process.popen3(cmd) do |stdin,stdout,stderr|
>        puts stdout.read
>        end
>
>   end

Why bother with Net::SSH?

require 'open3'

Open3.popen3 "ssh hostname sudo ls" do |i,o,e|
   i.puts "your password"
   puts o.read
end

PS: I hope that isn't your password

--
Poor workers blame their tools. Good workers build better tools. The
best workers get their tools to do the work for them. -- Syndicate Wars