From: Lance Sanchez <lance.sanchez@...>
Date: 2007-03-16T05:06:22+09:00
Subject: Re: Ruby, net-ssh, running an application on remote systems.

def classroom_pc(host, command)
  Net::SSH.start( host, Username, Password) do |session|
    shell = session.shell.sync
    puts "Opened Connection to #{host}"

    p shell.send_command( "#{command}")
    shell.exit
    puts "Closed Connection to #{host}"

  end
end
i modified the classroom_pc function, now i'm getting an error
#<struct Net::SSH::Service::Shell::SyncShell::CommandOutput stdout="",
stderr="Failed to open terminal.TERM environment variable needs
set.\r\n", status=0>
the application runs in a curses environment.

On 3/14/07, Lance Sanchez <lance.sanchez@gmail.com> wrote:
> sorry about that, I was implementing the shell and a responce, mozilla
> crashed and google talk sent a blank message. the app i'm running
> seems to be using ncurses, will that cause another problem?
>
>
> On 3/14/07, lance.sanchez@gmail.com <lance.sanchez@gmail.com> wrote:
> > ok, I have a server with a dozen systems attached to it. there are
> > commands that I need to run on each system one at a time. i can
> > connect to each system with the admin script, i can launch basic
> > commands i can even launch the script i need to but when that script
> > tries to launch the partimage application to backup the windows
> > partitions (this is all being done from linux) it doesn't, i don't get
> > any good errors it just dies closes the connection an moves onto the
> > next system.
> >
> > ==admin.rb==
> > #!/usr/bin/ruby
> > require 'net/ssh'
> > Username='root'
> > Password='{plain_text_password}'
> > Hosts = (101..112).collect {|x| "192.168.0.#{x}"}
> > def classroom_pc(host, command)
> >   Net::SSH.start( host, Username, Password) do |session|
> >     session.open_channel do |channel|
> >       channel.on_success do
> >         puts "Connected to #{host}"
> >       end
> >       channel.on_close do
> >         puts "Connection Closed to #{host}"
> >       end
> >       #channel.on_data do |ch, data|
> >       #  puts "\trecieved #{data}"
> >       #  puts "\tfrom #{host}"
> >       #end
> >
> >       channel.send_request "shell", nil, true
> >       channel.send_data "#{command}\n"
> >       channel.send_data "exit\n"
> >     end
> >     session.loop
> >   end
> > end
> > if $0 == __FILE__
> >         Hosts.length.times do |i|
> >                 classroom_pc(Hosts[i], "/mnt/backup/partimage.rb
> > save")
> >         end
> > end
> >
> >
> > ==/mnt/backup/partimage.rb==
> > #!/usr/bin/ruby
> > Win_drive = "/dev/hda1"
> > Location = "/mnt/backup/classroom/"
> > File_type = "partimag.gz"
> > def help_message
> >         puts "Usage:"
> >         puts "\tsave to save the image"
> >         puts "\tload to restore an image"
> >         puts "\thelp prints this message"
> > end
> > def hostname
> >         `hostname`.chomp
> > end
> > def save_image
> >         system("rm #{Location}#{hostname}*")
> >         system("partimage -odb -f3 -z1 save #{Win_drive} \
> >         #{Location}#{hostname}.#{File_type}")
> > end
> > def load_image
> >         system("partimage -eb -f3 restore #{Win_drive} \
> >         #{Location}#{hostname}.#{File_type}.000")
> > end
> >
> > if $0 == __FILE__
> >         unless ARGV.length == 1
> >                 help_message
> >         end
> >         if ARGV.length == 1
> >                 help_message if ARGV[0].downcase == "help"
> >                 save_image if ARGV[0].downcase == "save"
> >                 load_image if ARGV[0].downcase == "load"
> >         end
> > end
> >
> >
>
>