apt-get update出现“NO_PUBKEY”
问题现象
使用apt-get update时报错
W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192解决方法apt-key adv --recv-keys --keyserver keyserver.ubuntu.com #报错的PUBKEY#
然后再次执行apt-get update