ubuntu2004更换阿里源
时间: 2024-09-04 22:05:08 浏览: 78
Ubuntu 20.04系统想要更换为阿里云的软件源,可以按照以下步骤操作:
1. **备份原软件源**:
```sh
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
```
2. **打开新软件源列表**:
使用文本编辑器(如`nano`, `vim` 或 `gedit`),打开默认的软件源配置文件:
```sh
sudo nano /etc/apt/sources.list
```
3. **替换原有的官方源**:
将原有的官方源行替换成阿里云的源,比如对于Ubuntu 20.04,你可以添加阿里云的主源和额外的非安全源:
```
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-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-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu focal-backports 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
```
4. **更新密钥**:
搜索并替换阿里云的公共密钥,然后执行:
```sh
curl -fsSL https://mirrors.aliyun.com/repo/apt.key | sudo apt-key add -
```
如果需要添加额外的密钥,可以查阅阿里云发布的相应文档。
5. **刷新和安装软件**:
更新索引:
```sh
sudo apt update
```
然后安装软件,例如升级所有包:
```sh
sudo apt upgrade
```
6. **验证更改**:
查看当前使用的软件源,确认是否已切换至阿里云源:
```sh
cat /etc/apt/sources.list
```
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