修正 apt 的 校验签名出错 错误, How fix repository signature verification issues Options

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Error Message:

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W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com natty-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key

W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/natty-updates/Release

W: Some index files failed to download. They have been ignored, or old ones used instead.

Fix Step 1:

代码

$ sudo apt-get clean

$ cd /var/lib/apt

$ sudo mv lists lists.old

$ sudo mkdir -p lists/partial

$ sudo apt-get clean

If still getting error like :

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W: GPG error: http://archive.ubuntu.com natty-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key

Fix step 2 :

代码

$ sudo apt-get clean

$ sudo aptitude -o Acquire::http::No-Cache=True -o Acquire::BrokenProxy=true update