AI摘要 本文针对apt或apt-get更换软件源后出现的GPG错误提供了解决方案。通过执行`apt-key`命令从指定密钥服务器获取并导入缺失的公钥，即可有效解决该报错问题。 此内容根据文章生成，仅用于文章内容的解释与总结 apt-get换源后表GPG错误解决方法apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
AI摘要 本文介绍了Ubuntu系统更换国内软件源的方法。通过编辑`/etc/apt/sources.list`文件，将阿里云镜像源地址添加至首行，并执行`apt-get update`和`apt-get upgrade`命令更新缓存与系统，从而提升软件包的下载与更新速度。 此内容根据文章生成，仅用于文章内容的解释与总结 ubuntu apt-get更换国内源1.修改sources.list配置文件vi /etc/apt/sources.list在首行添加阿里云源deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse保存退出2.更新缓存apt-get update apt-get upgrade