修改软件数据源
# 1. 备份原有源文件
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

# 2. 替换为阿里云源
sudo sed -i 's@http://.*archive.ubuntu.com@https://mirrors.aliyun.com@g' /etc/apt/sources.list
sudo sed -i 's@http://.*security.ubuntu.com@https://mirrors.aliyun.com@g' /etc/apt/sources.list

# 3. 更新软件包索引
sudo apt update

# 4. 升级已安装的软件包（可选）
sudo apt upgrade -y