Ruby - Problems with Expect and Pty -

I am trying to write a ruby ​​script that will ssh on a server, run a given command, and Get the output from it. Even what I have achieved, has been taken from the book so far:

  requires' $ expect_verbose = true PTY.spawn (" Ssh root @ xy "). Reader, Author, PID. Reader.expect (/ root @ xy's password:. * /) Writer.Books ("Password") Reader. Chief (/.*/) Writer.Putus ("LS-L") Reader. Expand (/.*/ => Answer = Reader.Gets says "Answer = # {Answer}" end  

Unfortunately, I'm returning to everyone, this is:

Any ideas that I have done wrong and how to reduce it?

For this, I recommend using the Net-SSH gem: sudo gem install net-ssh :

The code is slightly less: