NET-SSH example using sudo to execute admin commands

simple_sudo.rb

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


host = "192.168.1.120"
user = "vagrant"
pass = "vagrant"

sudo_com = %Q{
  echo "#{pass}" | sudo -S id
  [ -f /usr/bin/apt ] && sudo apt-get -y install apache2 || yum groupinstall -y "Web Server"
  echo "UPTIME"
  uptime
  echo "BUILD:"
  getconf LONG_BIT
  echo "HOSTNAME"
  hostname
  sudo dmidecode -t bios
  uptime
  hostname
}

Net::SSH.start( host, user, :password => pass, :paranoid => false ){|ssh|
  begin
    ###########################################################
    # Executing priv commands with sudo
    ###########################################################
    ssh.open_channel{ |channel|
      channel.request_pty{|ch, success|
        # This is needed to start a sudo session on remote system
        if success
          puts "========================\npty session successfully obtained\n========================".upcase
          puts "========================\nExecuting priv commands\n========================".upcase
          ch.exec(sudo_com){|i, data|
            i.on_data{ |step, info|
              print info.upcase
            }
          }
        else
          puts "could not obtain pty".upcase
        end
      }
    }
  rescue Net::SSH::HostKeyMismatch => e
    puts "remembering new key: #{e.fingerprint}"
    e.remember_host!
    retry
  end
}