首先，我们需要通过以下命令来检查MySQL服务器是否启动：
ps -ef | grep mysqld
如果MySql已经启动，以上命令将输出mysql进程列表， 如果mysql未启动，你可以使用以下命令来启动mysql服务器:
mysql -u root -p
123456
进入或退出MySQL 服务器, 你可以执行以下命令:
root@localhost> show database;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'database' at line 1
| root@localhost> show databases; |
|---|
| Database |
| information_schema |
| mysql |
| performance_schema |
| sys |
4 rows in set (0.00 sec)
root@localhost> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
root@localhost> ^C
root@localhost> exit
