Ubuntu系统如何配置apt远程源

查看Unbuntu版本和Codename：

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qv123@localhost:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.3 LTS
Release:    22.04
Codename:   jammy              # 不同的版本apt源语句中就换不同的关键字

备份文件：

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

编辑 /etc/apt/sources.list 文件：(root用户才可以使用哦eof)

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# Unbuntu20.4版本，20.4版本在安装的时候指定好Mirrors addresses再重启网络并且执行sudo apt-get clean && sudo apt-get upgrade && sudo apt-get update命令就可以正常使用apt命令，不必再配置yum源
#添加阿里源
cat << eof > /etc/apt/sources.list
deb http://mirrors.aliyun.com/ubuntu focal main restricted
deb http://mirrors.aliyun.com/ubuntu focal-updates main restricted
deb http://mirrors.aliyun.com/ubuntu focal universe
deb http://mirrors.aliyun.com/ubuntu focal-updates universe
deb http://mirrors.aliyun.com/ubuntu focal multiverse
deb http://mirrors.aliyun.com/ubuntu focal-updates multiverse
deb http://mirrors.aliyun.com/ubuntu focal-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu focal-security main restricted
deb http://mirrors.aliyun.com/ubuntu focal-security universe
deb http://mirrors.aliyun.com/ubuntu focal-security multiverse
eof

# Unbuntu22.4版，22.4版本在安装的时候指定好Mirrors addresses再重启网络并且执行sudo apt-get clean && sudo apt-get upgrade && sudo apt-get update命令就可以正常使用apt命令，不必再配置yum源
#添加阿里源
cat << eof > /etc/apt/sources.list
deb http://mirrors.aliyun.com/ubuntu jammy main restricted
deb http://mirrors.aliyun.com/ubuntu jammy-updates main restricted
deb http://mirrors.aliyun.com/ubuntu jammy universe
deb http://mirrors.aliyun.com/ubuntu jammy-updates universe
deb http://mirrors.aliyun.com/ubuntu jammy multiverse
deb http://mirrors.aliyun.com/ubuntu jammy-updates multiverse
deb http://mirrors.aliyun.com/ubuntu jammy-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu jammy-security main restricted
deb http://mirrors.aliyun.com/ubuntu jammy-security universe
deb http://mirrors.aliyun.com/ubuntu jammy-security multiverse
eof

重启网络：
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```
sudo systemctl restart systemd-networkd
```
更新软件包列表：在终端中运行以下命令以使更改生效：
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```
sudo apt-get clean && sudo apt-get upgrade && sudo apt-get update
```
测试：
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```
sudo apt install -y nginx
```