Get ram usage in % and load average

gistfile1.rb

  def get_load_average
    load_avg = nil
    File.open('/proc/loadavg') {|f|
      load_avg = Float(f.readline.split(' ')[2])
    }
    load_avg
  end

  def get_ram_usage
    mem_total = mem_free = mem_cached = nil;
    File.foreach('/proc/meminfo'){|l|
      case l
        when /MemTotal/
          mem_total = Float(l.split(' ')[1])
        when /MemFree/
          mem_free = Float(l.split(' ')[1])
        when %r{(?<!Swap)Cached}
          mem_cached = Float(l.split(' ')[1])
      end
    }
    100 - ((mem_free + mem_cached) / mem_total * 100).to_i
  end