Another app is currently holding the Yum lock; Waiting for it to exit

Workaround for installing software hints with Yum:

[[email protected] beauty]# Yum install gcc
Loaded Plugins:fastestmirror
Existing lock/var/run/yum.pid:another copy is running as PID 1479.
Another app is currently holding the Yum lock; Waiting for it to exit ...
The other application Is:yum
Memory:55 M RSS (355 MB VSZ)
Started:thu Oct 12:40:56 2014-1:17:37 ago
State:sleeping, pid:1479
Another app is currently holding the Yum lock; Waiting for it to exit ...
The other application Is:yum
Memory:55 M RSS (355 MB VSZ)
Started:thu Oct 12:40:56 2014-1:17:39 ago
State:sleeping, pid:1479
Another app is currently holding the Yum lock; Waiting for it to exit ...
The other application Is:yum
Memory:55 M RSS (355 MB VSZ)
Started:thu Oct 12:40:56 2014-1:17:41 ago
State:sleeping, pid:1479

This is because the Yum is locked and the rm-rf/var/run/yum.pid is used to unlock it.

Another app is currently holding the Yum lock; Waiting for it to exit