（1）打开文件

   在访达中前往文件夹/etc/hosts。可以通过Shift+Command+G 查找文件位置， 再通过sudo vim /etc/hosts打开hosts文件。（Mac上）

（2）加上URL

  最后在目标文件加上如下内容即可

# GitHub Start 

192.30.253.112    github.com

192.30.253.119    gist.github.com

151.101.184.133    assets-cdn.github.com

151.101.184.133    raw.githubusercontent.com

151.101.184.133    gist.githubusercontent.com

151.101.184.133    cloud.githubusercontent.com

151.101.184.133    camo.githubusercontent.com

151.101.184.133    avatars0.githubusercontent.com

151.101.184.133    avatars1.githubusercontent.com

151.101.184.133    avatars2.githubusercontent.com

151.101.184.133    avatars3.githubusercontent.com

151.101.184.133    avatars4.githubusercontent.com

151.101.184.133    avatars5.githubusercontent.com

151.101.184.133    avatars6.githubusercontent.com

151.101.184.133    avatars7.githubusercontent.com

151.101.184.133    avatars8.githubusercontent.com

# GitHub End