ruby.rb

#!/usr/bin/env ruby 
require 'rubygems' 
require 'net/ssh'

(File.open(ARGV[0])).each do |i|
	print "#{i.chomp}: "
	HOST = '#{i.chomp}'
	USER = 'user'
	PASS = 'password'
	
	Net::SSH.start(HOST, USER, :password => PASS ) do|ssh|
		result = ssh.exec!('uptime')
		puts result
	end
end