参考：http://www.cnblogs.com/Neeo/p/8711201.html
安装mysql5.6
https://blog.csdn.net/brady74/article/details/80553795
-bash: wget: command not found
解决yum -y install wget
ERROR! The server quit without updating PID file (/var/lib/mysql/localhost.localdomain.pid).
yum remove mysql mysql-server mysql-libs compat-mysql
连接虚拟机mysql 提示 10060
systemctl stop firewalld，systemctl disable firewalld
安装python3
https://www.flyl3una.cc/2018/05/19/centos7%E5%AE%89%E8%A3%85python3%E7%8E%AF%E5%A2%83/
make: *** No targets specified and no makefile found. Stop.错误解决办法
https://www.cnblogs.com/JahanGu/p/7452527.html
ps：如果提示 ln: creating symbolic link `/usr/bin/python': File exists，点下面连接
https://blog.csdn.net/snail200x/article/details/50553656
上传文件需要使用
yum install -y lrzsz
Linux下的压缩zip,解压缩unzip命令详解及实例
https://www.cnblogs.com/zdz8207/p/3765604.html