linux镜像(持续更新)
Linux系统历史衍生图:https://upload.wikimedia.org/wikipedia/commons/1/1b/Linux_Distribution_Timeline.svg
ubuntu镜像:https://launchpad.net/ubuntu/+cdmirrors
Arch镜像:https://www.archlinux.org/mirrors/status/
CentOS镜像:http://mirror-status.centos.org/#cn
Fedora镜像:https://admin.fedoraproject.org/mirrormanager/mirrors
Debian镜像:http://mirror.debian.org/status.html
Ubuntu (23个版本)和CentOS下载 (27个版本) http://man.linuxde.net/download/