class Total::FreeBSD

def memory
  begin
    `sysctl -a`.split("\n").each do |t|
      return t.split[1].to_i if t.start_with?('hw.physmem:')
    end
  rescue Errno::ENOENT => e
    raise CantDetect, e.message
  end
  raise CantDetect, 'Can\'t detect memory size via sysctl'
end