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原文附录如下：
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Installing RPMforge
RPMforge is a collaboration of Dag, Dries, and other packagers. They provide over 4000 packages for CentOS, including mplayer, xmms-mp3, and other popular media tools. It is not part of RedHat or CentOS but is designed to work with those distributions.
Note: Because this repository is NOT part of CentOS, you should direct support questions to its maintainers.
Packages are supplied in RPM format and in most cases are ready to use. Beware that some packages are newer than the official CentOS versions and you should not blindly install those packages. Before you replace a CentOS package you should make sure that will not break anything important. In most cases you can revert any mistakes but it is best to avoid the mess.
CentOS 5
If you wish use this repository, you may wish to install Priorities, as a few packages in RPMforge are newer than their counterparts in the CentOS base repositories.
The note below shows the feelings of the yum maintainer but, from a practical standpoint, you have no other way to save packages from being overwritten if you wish to use the RPMforge repository. And, as of yet, no real world problems have been reported with regard to the 'yum-priorities' plugin.
??Note: Please note that the upstream maintainer of yum, Seth Vidal, had the following to say about 'yum priorities' in September 2009.
... lead in, ending: (same way most people end up setting up 'yum-priorities' anyway)
Gosh, I hope people do not set up yum priorities. There are so many things about priorities that make me cringe all over. It could just be that it reminds me of apt 'pinning' and that makes me want to hurl.
1.1. Priorities
yum-priorities is available in the CentOS 5 repositories:
yum install yum-priorities
Plugins are enabled in CentOS 5 by default.
Make sure that yum-priorities is enabled by editing the /etc/yum/pluginconf.d/priorities.conf file, and ensuring that it contains the following lines:
[main]
enabled=1
Edit the .repo files in /etc/yum.repos.d/ and set up priorities by adding the line:
priority=N
to a repository entry, where N is an integer number from 1 to 99.
The recommended settings are:
[base], [addons], [updates], [extras] ... priority=1
[centosplus],[contrib] ... priority=2
Third Party Repos such as rpmforge ... priority=N?? (where N is > 10 and based on your preference)
1.2. RPMforge
You can find a complete listing of the RPMforge package packages at
Download the rpmforge-release package. Choose one of the two links below, selecting to match your host's architecture. If you are unsure of which one to use you can check your architecture with the command uname -i
i386
x86_64
The preferred rpmforge-release package to retrieve and to install in order to enable that repository is one of the two listed above.
Install DAG's GPG key
rpm --import
verify the package you have downloaded
rpm -K rpmforge-release-0.5.1-1.el5.rf.*.rpm
Security warning: The rpmforge-release package imports GPG keys into your RPM database.
As long as you have verified the md5sum of the key injection package, and trust Dag, et al., then it should be as safe as your trust of them extends.
Install the package
rpm -i rpmforge-release-0.5.1-1.el5.rf.*.rpm
This will add a yum repository config file and import the appropriate GPG keys. At this point, you can set the priority of the RPMForge repository, and also of the CentOS repositories if you have not done so yet.
Test with this command:
yum check-update
It should output these two lines:
Loading "priorities" plugin
...
76 packages excluded due to repository priority protections
The number above may differ, but there should be several packages shown as being excluded.
If so then it looks like things are working so try installing something like this:
yum install mplayer