apt-get update出现NO_PUBKEY错误的解决方法
<p style='margin: 0px; padding: 5px 0px; outline: none; font-size: 14px; line-height: 30px; font-family: tahoma, arial, "Microsoft YaHei";'>该问题也会出现在Ubuntu其他的版本中，实际上在商家上线的系统模版中或多或少都有一些类似的细节错误，值得我们在使用中注意并修正。当然这一类的问题实际上并不算大，只是解决起来可能需要一些搜索工作。</p>
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apt-get update返回NO_PUBKEY错误的解决方法</p>
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错误代码：<br>
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<span><u>复制代码</u></span>
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代码如下:</p>
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W: GPG error: http://security.ubuntu.com trusty-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32</div>
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<br style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'>运行如下命令解决</span></p>
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<span><u>复制代码</u></span>
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代码如下:</p>
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apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 3B4FE6ACC0B21F32<br>
apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5</div>
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<br style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'>实际上类似的问题无论Key是什么只需要使用相同的代码替换到相对的Key的位置即可。</span></p>
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每一条命令的返回结果类似<br>
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<span><u>复制代码</u></span>
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代码如下:</p>
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Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.w8njroYZkC --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5<br>
gpg: requesting key 437D05B5 from hkp server keyserver.ubuntu.com<br>
gpg: key 437D05B5: public key "Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>" imported<br>
gpg: Total number processed: 1<br>
gpg: imported: 1</div>
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<br style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'>接下来再apt-get update应该就不会出现类似的错误了。</span></p>
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