http://rpmfind.net/linux/RPM/centos/5.8/x86_64/CentOS/CByName.html
http://pkgs.org/centos-5-rhel-5/centos-rhel-x86_64/compat-gcc-34-3.4.6-4.1.x86_64.rpm.html
查看已安装RPM包的安装路径
rpm -ql 卸载包
rpm -e
理出所有安装的包
rpm -qa
查看RPM文件信息
rpm -qpi xxx