github can not access very often due to your Internet service provider does not resolve the DNS caused
we only need to add their own URL corresponding to IP in the computer can be resolved
In the following URL query IP
https://www.ipaddress.com/
Linux edit hosts
sudo vim /etc/hosts
Add the following three URLs to IP hosts inside, each person may not be the same as the corresponding IP, and IP address github is also bound to change, of course, if you find it impossible to access a Web site, only need to check the corresponding IP that is added to it can
192.30.253.112 github.com
199.232.5.194 github.global.ssl.fastly.net
199.232.68.133 raw.githubusercontent.com
Restart Network
sudo /etc/init.d/networking restart
solve
