debian设置自动更新安全更新

mona included in Linux

2026-01-19 20 words One minute

Contents

安装必要软件包

apt install unattended-upgrades

启用自动更新功能

dpkg-reconfigure -plow unattended-upgrades

这步操作会在 /etc/apt/apt.conf.d/20auto-upgrades 自动生成配置，确保更新服务会在后台运行。

配置更新策略

vi /etc/apt/apt.conf.d/50unattended-upgrades

Unattended-Upgrade::Remove-Unused-Dependencies "true";
Unattended-Upgrade::Automatic-Reboot "true";
Unattended-Upgrade::Automatic-Reboot-Time "04:00";