1、cmd启动命令行
2、github.com打不开，多刷新几遍。等成功打开时，命令行输入nslookup github.com,把非权威应答下的IP地址复制到C:\Windows\System32\drivers\etc\hosts里，如查到的IP是192.30.255.112，则填写

192.30.255.112 github.com

3、命令行输入ipconfig /flushdns，此后每次都可以顺利打开github主页。如果遇到不能打开的时候，说明服务器关机了，重新走步骤2
4、Assets转圈，在hosts文件里添加即可

185.199.108.153 assets-cdn.github.com
185.199.109.153 assets-cdn.github.com
185.199.110.153 assets-cdn.github.com
185.199.111.153 assets-cdn.github.com
151.101.1.194  github.global.ssl.fastly.net
151.101.65.194 github.global.ssl.fastly.net
151.101.129.194 github.global.ssl.fastly.net
151.101.193.194 github.global.ssl.fastly.net185.199.108.133 raw.githubusercontent.com
185.199.110.133 raw.githubusercontent.com
185.199.109.133 raw.githubusercontent.com
185.199.111.133 raw.githubusercontent.com
185.199.110.133 objects.githubusercontent.com
185.199.111.133 objects.githubusercontent.com
185.199.108.133 objects.githubusercontent.com
185.199.109.133 objects.githubusercontent.com
185.199.111.154 github.githubassets.com
185.199.108.154 github.githubassets.com
185.199.109.154 github.githubassets.com
185.199.110.154 github.githubassets.com