Centos6.5使用yum安裝軟體的時候 Another app is currently holding the yum lock; waiting for it to exit...

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Loaded plugins: fastestmirror, refresh-packagekit, securityExisting lock /var/run/yum.pid: another copy is running as pid 2135.Another app is currently holding the yum lock; waiting for it to exit...  The other application is: PackageKit    Memory :  43 M RSS (891 MB VSZ)    Started: Wed Apr  1 03:57:30 2015 - 02:23 ago    State  : Sleeping, pid: 2135Another app is currently holding the yum lock; waiting for it to exit...  The other application is: PackageKit    Memory :  43 M RSS (891 MB VSZ)    Started: Wed Apr  1 03:57:30 2015 - 02:25 ago    State  : Sleeping, pid: 2135Another app is currently holding the yum lock; waiting for it to exit...  The other application is: PackageKit    Memory :  43 M RSS (891 MB VSZ)    Started: Wed Apr  1 03:57:30 2015 - 02:27 ago    State  : Running, pid: 2135

這是因為後台可能有其它的軟體在執行安裝，佔用的yum程式

1 .  可以使用 rm -rf /var/run/yum.pid 來強制接觸yum鎖定，就可以了

2.   等待yum自己解除鎖定(個人認為這樣好點，它可能在安裝系統必要的其它程式，如果強制解除，可能會有問題)

3.   我遇到這個問題的時候等了大概2分鐘左右的時間，它就自動解除鎖定了

Centos6.5使用yum安裝軟體的時候 Another app is currently holding the yum lock; waiting for it to exit...