yum 的使用

• root>yum
• root>yum grouplist
• root>yum search raid
• root>yum info mdadm
• root> yum install mdadm
• root>yum list javacc*
• root>yum install javacc*
• root>yum /etc/yum.conf
• root>yum grouplist
• root>yum /etc/yum.repos.d/CentOS-Base.repo