yum提示Another app is currently holding the yum lock; waiting for it to exit...

使用yum安裝計劃任務功能，結果提示：web # yum -y install vixie-cron Loaded plugins: fastestmirror, refresh-packagekit, security Existing lock /var/run/yum.pid: another copy is running as pid 25960. Another app is curr

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