給mac 安裝 wget

網上很多方法不行。其實很簡單，一句就ok：

brew install wget

命令一次过，在命令行测试下，

wget www.baidu.com

–2016-05-31 22:05:28–http://www.baidu.com/

Resolving www.baidu.com… 111.13.100.91, 111.13.100.92

Connecting to www.baidu.com|111.13.100.91|:80… connected.

HTTP request sent, awaiting response… 200 OK

Length: unspecified [text/html]

Saving to: ‘index.html’

index.html [ <=> ] 96.65K 68.0KB/s in 1.4s

2016-05-31 22:05:30 (68.0 KB/s) - ‘index.html’ saved [98974]

OK!