brew install wget 如果报没有发现brew命令的话参考brew安装： Brew安装 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!