The following signatures couldn‘t be verified because the public key is not available问题解决

Ubuntu系统中添加密钥：快速教程
最新推荐文章于 2025-05-31 17:37:03 发布
原创 最新推荐文章于 2025-05-31 17:37:03 发布 · 965 阅读 · 0 ·
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#ubuntu #linux #运维

本文指导如何通过命令行操作，在Ubuntu系统中利用apt-key工具接收特定的公钥40976EAF437D05B5，用于软件包管理。

记住NO_PUBKEY后面的那串数字例如40976EAF437D05B5

然后输入：

sudo apt-key  adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5

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The following signatures couldn't be verified because the public key is not available: NO_PUBKEY
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当遇到 `The following signatures couldn't be verified because the public key is not available: NO_PUBKEY` 错误时，通常是在使用 `apt` 进行软件包安装或更新时，系统无法找到用于验证仓库签名的 GPG 公钥。...
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for apt-get update “the following signatures couldn’t be verified because the public key is not available”just need sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 40976EAF437D05B5
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找到对应的key之后直接下载，下载文件为armored-keys.asc，传到linux服务器，然后使用命令。，在里面搜索自己要找的pubkey，比如我这里搜索40976EAF437D05B5。因为一些代码库需要使用老版本gcc，我在安装gcc的时候出现问题。
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