Change Expired Linux Password

chgpass-passEx.rb

require 'net/ssh'


host = IO.readlines('/path/to/your/servers.list') # full path of servers' list

i = 0
while i != host.length
  Net::SSH.start(host[i], 'emerg', :password => "oldpass" , :verbose=> :warn) do |ssh|
    puts "-------------------------------------"
    puts "|#--> IP-address: #{host[i]}"
    puts "-------------------------------------"
    ssh.open_channel do |channel|
      channel.on_request "exit-status" do |channel, data|
	  $exit_status = data.read_long
      end
      channel.on_data do |channel, data|
	  puts data.inspect
	  if data.inspect.include? "current"
		  channel.send_data("oldpass\n");
	  elsif data.inspect.include? "New"
		  channel.send_data("newpass\n");
	  elsif data.inspect.include? "new"
		  channel.send_data("newpass\n");
	  
	  sleep 0.1
	  end
      end
      channel.request_pty
      # This will just safely fail if we have already a password prompt on
      channel.exec("passwd");
      channel.wait
      # Will reflect a valid status in both cases
      puts $exit_status
    end
    ssh.loop
  end
i += 1
end