使用阿里或者其他國內(nèi)鏡像源包含了一些自帶源沒有的軟件包，在速度上也相對快一些
- 使用vim或者gedit命令編輯/etc/apt/sources.list文件
#使用vim編輯
$sudo vim /etc/apt/sources.list
#使用gedit編輯
$sudo gedit /etc/apt/sources.list
- 在文檔開始位置輸入以下代碼
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
編輯sources.list
保存退出
使用命令更新緩存
$sudo apt-get update
$sudo apt-get upgrade
