1.vi /etc/hosts后加 192.30.253.113 github.com
2.問題解決
注意：
一、首先未開放root之前，hosts文件是只讀且無法修改的。
$ vi /etc/hosts
"/etc/hosts" [readonly] 28L, 759C
E45: 'readonly' option is set (add ! to override)
二、開始通過sudo開啟root權限
prudentwoo:~?prudentwoo$?su?-?root
Password:
su:?Sorry
prudentwoo:~?prudentwoo$?su?-?root
Password:
su:?Sorry
prudentwoo:~?prudentwoo$?sudo?passwd?root
Changing?passwordforroot.
New?password:
Retype?new?password:
prudentwoo:~?prudentwoo$?su?-?root
Password:
prudentwoo:~?root#?exit
logout
prudentwoo:~?prudentwoo$
