启动数据库：
[root@server ~]# mysqld_safe &
[1] 3289
[root@server ~]# 130913 08:19:58 mysqld_safe Logging to '/usr/local/mysql/data/server.gao.err'.
130913 08:19:58 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
连接到数据库：
[root@server ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.13 MySQL Community Server (GPL) Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>
查看数据库列表：
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec) mysql>
查看用户状态：
mysql> 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
mysql> select host,user from mysql.user;
+------------+------+
| host | user |
+------------+------+
| 127.0.0.1 | root |
| ::1 | root |
| localhost | |
| localhost | root |
| server.gao | |
| server.gao | root |
+------------+------+
6 rows in set (0.00 sec) mysql>
创建用户:
mysql> create user 'usrabc'@'%' identified by 'usrabc';
Query OK, 0 rows affected (0.00 sec) mysql> select host,user from mysql.user;
+------------+--------+
| host | user |
+------------+--------+
| % | usrabc |
| 127.0.0.1 | root |
| ::1 | root |
| localhost | |
| localhost | root |
| server.gao | |
| server.gao | root |
+------------+--------+
7 rows in set (0.00 sec) mysql> 删除
Delete FROM user Where User='test' and Host='localhost';