PS：EPEL的yum源是很稳定的第三方yum安装源，也是我经常使用的，基于CentOS/RHEL7.x的也有了，整理如下： 

# wget http://dl.fedoraproject.org/pub/epel/beta/7/x86_64/epel-release-7-0.2.noarch.rpm
# yum install epel-release-7-0.2.noarch.rpm
或者
# rpm -ivh epel-release-7-0.2.noarch.rpm

验证查看是否安装成功：

yum repolist

查看某个包的详细信息：

yum --enablerepo=epel info htop


 

列出epel源的所有包列表：

yum --disablerepo="*" --enablerepo="epel" list available | less

## RHEL/CentOS 6 32-Bit ##

# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
# rpm -ivh epel-release-6-8.noarch.rpm

## RHEL/CentOS 6 64-Bit ##

# wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
# rpm -ivh epel-release-6-8.noarch.rpm

## RHEL/CentOS 5 32-Bit ##

# wget http://download.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
# rpm -ivh epel-release-5-4.noarch.rpm

## RHEL/CentOS 5 64-Bit ##

# wget http://download.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
# rpm -ivh epel-release-5-4.noarch.rpm