[VirtualBox][Vagrant] How to install and use vagrant

---

Install :

1. Go to Vagrant and download suitable package and execute it.
2. Go to VirtualBox and download following package.
VirtualBox platform packages
VirtualBox Extension Pack

---

Usage:

1. Create a folder

$ mkdir happy-1
$ cd happy-1

2.
Choose box Windows box or Mac OS box or following box

hashicorp/precise64: Ubuntu 12.04 LTS (Precise Pangolin) 64-bit
ubuntu/trusty64: Ubuntu 14.04 LTS (Trusty Tahr) 64-bit
chef/centos-6.5: CentOS 6.5 x64
chef/debian-7.4: Debian 7.4 x64
yungsang/coreos: CoreOS，support Docker。
williamyeh/ubuntu-trusty64-docker: Ubuntu 14.04 LTS，support Docker。
williamyeh/debian-jessie64-docker: Debian Jessie，support Docker。

Choose to practice docker.

$ vagrant init yungsang/coreos
$ vagrant up

After system startup, then ssh into machine and have fun.

vagrant ssh

---

Reference :
1. Vagrant Tutorial（2）跟著流浪漢把玩虛擬機
2. Windows Boxes for Vagrant Courtesy of Modern.ie
3. Issue tracker for OS X Mavericks Vagrant box