ubuntu 下 apt-get update 错误
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8D5A09DC9B929006
解决方法:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8D5A09DC9B929006
sudo apt upgrade
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8D5A09DC9B929006
解决方法:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8D5A09DC9B929006
sudo apt upgrade
