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Another app is currently holding the yum lock; waiting for it to exit... 另一个应用程序是:PackageKit

错误描述
/var/run/yum.pid 已被锁定,PID 为 2949 的另一个程序正在运行
Another app is currently holding the yum lock; waiting for it to exit…
另一个应用程序是:PackageKit

解决办法
kill -s 9 PID

根据PID查看进程
ps -ef | grep 2949

错误原因
yum更新时可能被断开

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