Ubuntu换源

什么是安装源？

安装源类似于一个软件仓库，绝大部分系统软件和工具都可以从软件仓库中自动下载和安装。

Ubuntu安装后默认的官方源是美国的服务器，因此访问速度很慢。所以需要切换成国内的

切换安装源

• 安装源位置：/etc/apt/sources.list
• 使用gedit(或者vim等)命令，打开sources.list文件，修改安装源 gedit /etc/apt/sources.list
• 修改保存后，更新源 apt-get update

国内源：

#添加阿里源
deb <http://mirrors.aliyun.com/ubuntu/> focal main restricted universe multiverse
deb-src <http://mirrors.aliyun.com/ubuntu/> focal main restricted universe multiverse
deb <http://mirrors.aliyun.com/ubuntu/> focal-security main restricted universe multiverse
deb-src <http://mirrors.aliyun.com/ubuntu/> focal-security main restricted universe multiverse
deb <http://mirrors.aliyun.com/ubuntu/> focal-updates main restricted universe multiverse
deb-src <http://mirrors.aliyun.com/ubuntu/> focal-updates main restricted universe multiverse
deb <http://mirrors.aliyun.com/ubuntu/> focal-proposed main restricted universe multiverse
deb-src <http://mirrors.aliyun.com/ubuntu/> focal-proposed main restricted universe multiverse
deb <http://mirrors.aliyun.com/ubuntu/> focal-backports main restricted universe multiverse
deb-src <http://mirrors.aliyun.com/ubuntu/> focal-backports main restricted universe multiverse
#添加清华源
deb <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic main restricted universe multiverse
deb-src <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic main restricted universe multiverse
deb <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-updates main restricted universe multiverse
deb-src <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-updates main restricted universe multiverse
deb <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-backports main restricted universe multiverse
deb-src <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-backports main restricted universe multiverse
deb <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-security main restricted universe multiverse
deb-src <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-security main restricted universe multiverse
deb <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-proposed main restricted universe multiverse
deb-src <https://mirrors.tuna.tsinghua.edu.cn/ubuntu/> bionic-proposed main restricted universe multivers