backup.rb

def backup
     @time = Time.new
     @Dtime = @time.strftime("%Y-%m-%d--%I:%M")
      begin

     Net::SSH.start("#{@host}", "#{@user}", :port =>"22", :password=>"#{@pwd}") do |ssh|
        ssh.open_channel do |channel|
         channel.on_request( "#{@mysl_dump} -u #{@mysql_user} -p'#{@mysql_password}' #{@uid_instance} |bzip2  > /data/#         {@uid_instance}.#{@Dtime}.sql.bz2")

           channel.process.popen3("#{@dump}") do | input, output, error|
              input.puts @dump
                 puts "iiiii6>#{@dump}=#{output.read}"
            end        
       end 
     end
end