apt-get update 或者aptitude update出现以下错误：
The following signatures couldn’t be verified because the public key is not available: : NO_PUBKEY B5B7720097BB3B58
解决方法：
1，从任何一个key server获得缺失的公钥B5B7720097BB3B58。
gpg –keyserver subkeys.pgp.net –recv-keys B5B7720097BB3B58
2，导入公钥B5B7720097BB3B58。
gpg -a –export B5B7720097BB3B58 | sudo apt-key add –
国内可用key server列表：
keyserver.ubuntu.com
pgp.mit.edu
subkeys.pgp.net
www.gpg-keyserver.de
转载请注明：爱开源 » The following signatures couldn’t be verified because the public key is not available: : NO_PUBKEY
转载请注明：爱开源 » The following signatures couldn’t be verified because the public key is not available: : NO_PUBKEY