net-ssh : popen3

[Philip Müller]

Hi everybody,

I want to start and interact with a process on another machine.
After reading example 20.10 in "The Ruby Cookbook" and doing some internet
research I decided to use net/ssh and popen3.
Sadly, it does not work - it just doesn't do anything noticeable, it
doesn't even terminate.

Here's my code:

----------- CODE ----------------

require 'rubygems'
require 'net/ssh'

def run_remotely(command)
Net::SSH.start("localhost", "tester", assword => "pass") do |session|
session.process.popen3(command) do |stdin, stdout, stderr|
yield stdin, stdout, stderr
end
end
end

run_remotely('cat') do |stdin, stdout, stderr|
stdin.puts 'Line one.\n'
end

----------- /CODE ----------------

Why doesn't this work?


Thanks,

Philip

P.s.:
I have successfully used channel.exec to execute "ls", but it doesn't seem
like it allows two-way communication.

 

[Philip Müller]

Sorry...

run_remotely('cat') do |stdin, stdout, stderr|
stdin.puts 'Line one.\n'
end

is supposed to be

run_remotely('cat') do |stdin, stdout, stderr|
stdin.puts 'Line one.\n'
puts stdout.read
end


Regards

Philip