首先，使用su - root切換至超級用戶權限；然後，vim /etc/apt/sources.list，打開源列表文件，這裏沒有進行備份，如果需要，也可以用cp命令進行下備份；將以下所示的源列表之一全部複製到sources.list文件中，替換原有內容；最後，保存並關閉已經打開的source.list文件，在終端輸入sudo apt-get update命令，網易源 速度很快。
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