Ubuntu 修改 apt-get 源為國內鏡像源的方法

1、原文件備份

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

2、編輯源列表文件

sudo vim /etc/apt/sources.list

3、將原來的列表刪除，添加如下內容（阿里鏡像源）

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multivers
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse

 

4、運行 sudo apt-get update

5、如果出現以下錯誤：

	E: 無法獲得鎖 /var/lib/apt/lists/lock - open (11: 資源暫時不可用)
	E: 無法對目錄 /var/lib/apt/lists/ 加鎖

是因為上一次更新源的時候非常規中斷導致的,解決方法如下:

sudo rm /var/lib/apt/lists/lock