[Introduction]
  1. putty : http://codingsteps.com/installing-and-using-putty-on-mac-os-x/
    Install: sudo port install putty
    Run : putty
    usb serial : /dev/cu.usbserial
    usb info : You can get the usb information from "System information" app.
    http://pim.famnit.upr.si/blog/index.php?/archives/165-OS-X-equivalent-to-lsusb.html
[Command]
  1. port selfupdate