linux 初始化(清空)数据库

1.首先关闭mysql [root@localhost ~]# systemctl status mysqld #查看mysql状态 [root@localhost ~]# systemctl stop mysqld #关闭数据库 [root@localhost ~]# systemctl status mysqld #再次查看,发现已经关闭 ● mysqld.service - MySQL Server Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: d