linux 解决 安装软件一直出现重复的信息

    State  : Sleeping, pid: 2905
Another app is currently holding the yum lock; waiting for it to exit...
  The other application is: PackageKit
    Memory :  29 M RSS ( 76 MB VSZ)
    Started: Wed May  6 05:33:21 2015 - 07:44 ago
    State  : Sleeping, pid: 2905
Another app is currently holding the yum lock; waiting for it to exit...
  The other application is: PackageKit
    Memory :  29 M RSS ( 76 MB VSZ)
    Started: Wed May  6 05:33:21 2015 - 07:46 ago
    State  : Sleeping, pid: 2905
Another app is currently holding the yum lock; waiting for it to exit...
  The other application is: PackageKit
    Memory :  29 M RSS ( 76 MB VSZ)
    Started: Wed May  6 05:33:21 2015 - 07:48 ago
    State  : Sleeping, pid: 2905
^C

这是因为后台可能有其它的软件在执行安装，占用的yum程序

1 .  可以使用 rm -rf /var/run/yum.pid 来强制接触yum锁定，就可以了