首先是vagrant工具，用於對虛擬環境的管理：

遇到的問題

vagrant failed to initialize at a very early stage:

The home directory you specified is not accessible. The home
directory that Vagrant uses must be both readable and writable.

You specified: /Users/xxx/.vagrant.d

解決方案：ls + whoami

ls -dlah  /Users/xxx/.vagrant.d

然後chown：

sudo chown -R xxx  /Users/xxx/.vagrant.d

2.虛擬環境：virtualbox安裝