Interesting little train

Original reference: https://blog.csdn.net/zhaotiannuo_1998/article/details/88122030?ops_request_misc=%25257B%252522request%25255Fid%252522%25253A%252522160854794316780288780205%252522%25252C%252522201407130102522201407130102522%25253A% %25257D&request_id=160854794316780288780205&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2 _all top_click~default-1-88122030.first_rank_v2_pc_rank_v29&utm_term=%E5%B0%8F%E7%81%A%E8%BD

[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]#  wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
[root@localhost yum.repos.d]#  yum -y install epel-release

[root@localhost yum.repos.d]# sl

GIF