groups
#NAME# adm cdrom sudo dip plugdev lpadmin sambashare

sudo usermod -a -G vboxusers #NAME#

lsblk

共用剪貼簿
http://blog.xuite.net/yh96301/blog/300815666-VirtualBox+4.3%E5%85%B1%E7%94%A8%E5%89%AA%E8%B2%BC%E7%B0%BF