1.cd /etc/pki/rpm-gpg/
2.wget https://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-62.wget https://m
阅读背景：
linux 使用rpm安装软件时,遇到"warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOK
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