epel

• EPEL的全称叫Extra Packages for Enterprise Linux
• 是由Fedora社区打造的为RHEL系列提供高质量软件包的项目
• 装上了EPEL之后就相当于添加了一个第三方源

[root@zhujipeng test]# yum search epel
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
 * base: mirrors.shuosc.org
 * extras: mirrors.shuosc.org
 * updates: mirrors.shuosc.org
================================================ N/S Matched: epel ================================================
epel-release.noarch : Extra Packages for Enterprise Linux repository configuration

  Name and summary matches only, use "search all" for everything.

详情参考 什么是EPEL 及 Centos上安装EPEL

yum-utils

yum-utils以多种方式扩充yum的功能，从而使其功能更强大，使用更方便

[root@zhujipeng test]# yum search yum-utils
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
 * base: mirrors.shuosc.org
 * extras: mirrors.shuosc.org
 * updates: mirrors.shuosc.org
============================================= N/S Matched: yum-utils ==============================================
yum-utils.noarch : Utilities based around the yum package manager

  Name and summary matches only, use "search all" for everything.

详情参考 如何安装和使用’yum-utils’来维护Yum并提高其性能

Rpmfind

Rpmfind是一个查找和下载rpm的网站，有非常强大的搜索功能

参考

什么是EPEL 及 Centos上安装EPEL
如何在CentOS 5/6上安装EPEL 源
如何安装和使用’yum-utils’来维护Yum并提高其性能