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b1_ubuntu22.04.5换源.md
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# ubuntu22.04.5换源
## 备份原文件
```
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
```
## sed替换
```
sudo sed -i "s@http://.*archive.ubuntu.com@http://mirrors.aliyun.com@g" /etc/apt/sources.list
sudo sed -i "s@http://.*security.ubuntu.com@http://mirrors.aliyun.com@g" /etc/apt/sources.list
```
## 注释追加
```
sudo sed -i 's/^deb/# &/' /etc/apt/sources.list
sudo sed -i 's/^deb-src/# &/' /etc/apt/sources.list
sudo cat <<EOF >> /etc/apt/sources.list
deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
EOF
```
## 更新
sudo apt update