The following signatures couldn't be verified because the public key is not available: NO_PUBKEY XXXX
reference apt-key adv --recv-keys --keyserver keyserver.ubuntu.com XXXXXX apt-get update ...
原文：W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8CF63AD3F06FC659
报错信息： 解决： ...
2019-06-15 14:46 0 542 推荐指数：
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