rpm2cpio myrpm.src.rpm | cpio -civ ‘*.spec‘
安装rpmrebuild 的方法yum install -y rpmrebuild
参考命令
rpmrebuild -e -p plv8-2.1.0-6.fc28.x86_64.rpm
https://stackoverflow.com/questions/5613954/extract-the-spec-file-from-rpm-package
https://blog.packagecloud.io/eng/2015/10/13/inspect-extract-contents-rpm-packages/
原文：https://www.cnblogs.com/rongfengliang/p/11839885.html