服務(wù)：

# chkconfig --list        列出所有系統(tǒng)服務(wù)
# chkconfig --list | grep on     列出所有啟動的系統(tǒng)服務(wù)

# chkconfig --list mysqld

# whereis mysql  查看文件安裝路徑
# which mysql     查詢運行文件所在路徑(文件夾地址)
usr/bin/mysql 是指：mysql的運行路徑
var/lib/mysql 是指：mysql數(shù)據(jù)庫文件的存放路徑
usr/lib/mysql 是指：mysql的安裝路徑

添加環(huán)境變量：

# vi /etc/profile
# export MYSQL_HOME=/usr/local/mysql
# export PATH=$PATH:$MYSQL_HOME/bin

1.數(shù)據(jù)庫指令：

# service mysqld start    啟動MySQL
# service mysqld restart 重啟MySQL
# service mysqld stop     停止MySQL

2.進入MySQL表單操作

# -u root -p  /mysql -h localhost -u root -p DatabaseName;    進入MySQL
 MySQL> show databases;            列出數(shù)據(jù)庫
 MySQL>  create database XXX;      創(chuàng)建數(shù)據(jù)庫XXX

 MySQL>  use databaseName;         使用數(shù)據(jù)庫databaseName
 MySQL>  show tables;              列出表單

MySQL> create table mytablename (ID int auto_increment not null primary key,usename varchar(20),password varchar(64),sex varchar(10),address varchar(20));  創(chuàng)建表單
MySQL> drop table mytablename ;                 刪除表單
MySQL> drop database databasename;              刪除數(shù)據(jù)庫

3.增刪改查

MySQL>  insert into mytablename values('','zhangsan','123456','fomale','guiyanag');  插入

MySQL> select * from mytablename ;                 查找驗證結(jié)果
MySQL> select * from mytablename  where ID = '1';  精準查找

MySQL> update mytablename  set address = 'shanghai' where username = 'zhangsan'; 修改zhangsan的address為shanghai

MySQL> delete from mytablename  where ID = '1';     刪除記錄

新增萬能用戶

  grant select On database.* to username@localhost identity by 'password'

用戶名user_1 密碼是123456

可以自任何PC上登錄這個用戶對數(shù)據(jù)庫操作

MySQL> grant select,insert update,delete on *.* to user_1@"%" identity by "123456";

創(chuàng)建只有在本機才能操作數(shù)據(jù)庫的用戶

用戶名user_2 密碼是123456

MySQL> grant select,insert update,delete on *.* to user_2@localhost identity by "123456";

登錄數(shù)據(jù)庫庫

MySQL> -u user_1 -p -h IP地址;

另外附上常用的一些命令我列一下僅供參考：

其它的mysql數(shù)據(jù)庫相關(guān)的操作如下

(1) 創(chuàng)建數(shù)據(jù)庫TestDB mysql> create database TestDB;
(2) 制定TestDB數(shù)據(jù)庫為當前默認數(shù)據(jù)庫 mysql> use TestDB;
(3) 在TestDB數(shù)據(jù)庫中創(chuàng)建表customers mysql> create table customers(userid int not null, username varchar(20) not null);
(4) 顯示數(shù)據(jù)庫列表 mysql> show databases;
(5)顯示數(shù)據(jù)庫中的表 mysql> show tables;
(6)刪除表customers mysql> drop table customers;
(7)顯示customers表的結(jié)構(gòu) mysql> desc customers;
(8) 向customers表中插入一條記錄 mysql> insert into customers(userid, username) values(1, 'hujiahui');
(9) 讓操作及時生效; mysql> commit;
(10) 查詢customers中的記錄 mysql> select * from customers;
(11) 更新表中的數(shù)據(jù) mysql> update customers set username='DennisHu' where userid=1;
(12) 刪除表中的記錄 mysql> delete from customers;
(13)授予likui用戶訪問數(shù)據(jù)庫的權(quán)限 # grant select, insert, update, delete on *.* to likui@localhost indentified by "123456";