yum安装软件可选择版本

https://iuscommunity.org/pages/Repos.html#release-packages

wget http://dl.iuscommunity.org/pub/ius/stable/CentOS/6/x86_64/epel-release-6-5.noarch.rpm
wget http://dl.iuscommunity.org/pub/ius/stable/CentOS/6/x86_64/ius-release-1.0-13.ius.centos6.noarch.rpm
rpm -ivh epel-release-6-5.noarch.rpm
rpm -ivh ius-release-1.0-13.ius.centos6.noarch.rpm