[base]
name=CentOS 4.4 for RHEL4 - Base #随便取名字
baseurl= http://mirror.be10.com/centos/4.4/os/i386/
[updates]
name=CentOS 4.4 for RHEL4 - Updates #随便取名字
baseurl= http://mirror.be10.com/centos/4.4/updates/i386/
输入命令
yum update