http://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/ src.rpm格式的源码及rpm包下载
http://www.centos.org/modules/tinycontent/index.php?id=30 src.rpm格式的源码及rpm包下载包括内核
http://www.kernel.org/ 压缩格式的源码及内核下载
http://download.chinaunix.net/download/0014000/13264.shtml 操作系统下载