From: "ara.t.howard" <ara.t.howard@...>
Date: 2007-11-19T02:01:28+09:00
Subject: Re: Executing another cmdl-app with ruby and typing in a password?


On Nov 18, 2007, at 12:45 AM, kazaam wrote:

> Thanks for pointing me in the right direction. I now wrote a little  
> loop to do this work:
>
> require 'pty'
> require 'expect'
>
> PTY.spawn("ruby test.rb") do |read_t,write_t,pid|
>   write_t.sync = true
>   read_t.expect(/^enter passphrase.*/) {write_t.print "123456"}
> end
>
> But I have a problem. How to find out if the spawned process  
> executed with or without errors? I mean in this example "ruby  
> test.rb". If I use system I could do:
> 	puts "error" if not system("ruby test.rb")
>
> But PTY.spawn always just returns 'nil'. Is there any way I can  
> check for correct execution?
>
>
> -- 
> kazaam <kazaam@oleco.net>

cfp:~ > cat a.rb
require "yaml"
require "pty"

module PTY
   def self.execute *a, &b
     begin
       spawn *a, &b
       0
     rescue => e
       e.status rescue raise
     end
   end
end

status =
   PTY.execute "ruby" do |r,w,pid|
     w.sync = true
     w.puts "42"
     y 'gets' => r.gets.strip.to_i
   end
y 'status' => status


cfp:~ > ruby a.rb
---
gets: 42
---
status: 0


a @ http://codeforpeople.com/
--
we can deny everything, except that we have the possibility of being  
better. simply reflect on that.
h.h. the 14th dalai lama