后记：
此博文写作背景下网易的源还可以下载centos6的镜像，现在好多centos6的源已经下架了。
补充一个可以下载的源：
https://man.linuxde.net/download/CentOS_6_0
后记的后记：
centos6落入了历史的尘埃。。。。。。
This directory (and version of CentOS) is deprecated. Please see this FAQ
concerning the CentOS release scheme:
https://wiki.centos.org/FAQ/General
Please keep in mind that 6.0, 6.1, 6.2, 6.3, 6.4 , 6.5, 6.6, 6.7, 6.8 , 6.9 and 6.10 no longer get any updates, nor
any security fix's.
The whole CentOS 6 is *dead* and *shouldn't* be used anywhere at *all*
