linux安装mysql时执行 scriptsmysql_install_db --user=mysql报错 bash: mysql_install_db:未找到命令

linux安装mysql时执行 scripts/mysql_install_db --user=mysql报错 bash: mysql_install_db:未找到命令是设置错误造成的，解决方法为：

1、下载mysql的源码安装包，使用下面的命令来下载wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.24.tar.gz下载的时间可能有点漫长，请耐心等待。

2、下载完成后，使用命令: ll 可以查看当前目前下存在  mysql-5.6.24.tar.gz文件然后使用下面的命令解压压缩包：tar -zxvf mysql-5.6.14.tar.gz。

3、然后使用命令： ll 可以查看当前目前下存在  mysql-5.6.24 目录使用命令：cd mysql-5.6.24  切换到 mysql-5.6.24  这个目录下。

4、安装完成后，我们还要建立mysql的配置，首先设置mysql的访问权限，使用命令查看是否已经存在mysql用户及用户组，查看用户列表命令：cat /etc/passwd 查看用户组列表命令：cat /etc/group。

5、添加mysql的环境变量，以方便以后的 *** 作输入密码：vi /etc/profile在文件的底部添加如下内容：PATH=/usr/local/mysql/bin:$PATHexport PATH保存并退出，输入输入命令，使配置立即生效：source /etc/profile。

安装MySQLmysql-5.6.14可以参考如下安装步骤：

1、将解压缩后的文件放到自己想要的地方，并配置环境变量。示例中存放的目录为：F:\mysql\mysql-5.6.14-winx64

2、在环境变量中添加：MYSQL_HOME:F:\mysql\mysql-5.6.14-winx64，在path路径中加入：%MYSQL_HOME%\bin。配置环境变量不是必须的，只是为了能更方便的在命令行中使用mysql的命令行工具。

3、修改ini配置文件

5.6.14的解压缩版里有一个my-default.ini文件，copy一份改名为my.ini放在同级目录下。修改my.ini， my.ini内容如下：

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# For advice on how to change settings please see

# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html

# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the

# *** default location during install, and will be replaced if you

# *** upgrade to a newer version of MySQL.

[mysqld]

loose-default-character-set=utf8

basedir = F:/mysql/mysql-5.6.14-winx64

datadir = F:/mysql/mysql-5.6.14-winx64/data

[client]

loose-default-character-set=utf8

[WinMySQLadmin]

Server=F:/mysql/mysql-5.6.14-winx64/bin/mysqld.exe

# Remove leading # and set to the amount of RAM for the most important data

# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.

# innodb_buffer_pool_size = 128M

# Remove leading # to turn on a very important data integrity option: logging

# changes to the binary log between backups.

# log_bin

# 设置mysql的安装目录

# 设置mysql数据库的数据存放目录

# These are commonly set, remove the # and set as required.

# basedir = .....

# datadir = .....

# port = .....

# server_id = .....

character-set-server=utf8

# Remove leading # to set options mainly useful for reporting servers.

# The server defaults are faster for transactions and fast SELECTs.

# Adjust sizes as needed, experiment to find the optimal values.

# join_buffer_size = 128M

# sort_buffer_size = 2M

# read_rnd_buffer_size = 2M

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

4、安装服务

开始——所有程序——附件——命令提示符，右键以管理员身份运行。 输入命令：

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C:\>f:

F:\>cd F:\mysql\mysql-5.6.14-winx64\bin

F:\mysql\mysql-5.6.14-winx64\bin>mysqld -install

Service successfully installed.

5、启动服务

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F:\mysql\mysql-5.6.14-winx64\bin>cd\

F:\>net start mysql

MySQL 服务正在启动 .

MySQL 服务已经启动成功。

6、配置用户

还在上面的命令窗口里面，输入命令：mysql -u root -p

回车后提示输入密码。

mysql解压缩版初次安装管理员root的密码为空，因此直接再回车一次就登入mysql数据库了。

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F:\>mysql -u root -p

Enter password:

Welcome to the MySQL monitor. Commands end with or \g.

Your MySQL connection id is 1

Server version: 5.6.14 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.

成功后

输入命令：use mysql/*使用mysql数据库*/

mysql>use mysql

Database changed

输入命令：select host,user,password from user/* 查看系统的账户信息 */

mysql>select host,user,password from user

+-----------+------+----------+

| host | user | password |

+-----------+------+----------+

| localhost | root | |

| 127.0.0.1 | root | |

| ::1 | root | |

| localhost | | |

+-----------+------+----------+

4 rows in set (0.00 sec)

host：代表mysql服务允许哪个IP来的请求。localhost和127.0.0.1指mysql服务所在的主机，即本地。：：1是IPV6的IP地址写法，

全称为：0000:0000:0000:0000:0000:0000:0000:0001。现在都是IPV4的网络，可以不用管他。

user：指账户名称。不同的host下账户名称可以相同。

password：密码。

可以看到，默认账户里只支持本地连接，并且账户没有密码。现在的问题明确了，就是要将匿名用户删除，为root用户添加远程访问和密码，再为自己添加个人账户。指令如下：

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mysql>update user set password=PASSWORD('root') where user='root'

Query OK, 3 rows affected (0.00 sec)

Rows matched: 3 Changed: 3 Warnings: 0

mysql>grant all on *.* to root@'%' identify by 'root'

ERROR 1064 (42000): You have an error in your SQL syntaxcheck the manual that

corresponds to your MySQL server version for the right syntax to use near 'ident

ify by 'root'' at line 1

mysql>grant all on *.* to walle@'%' identify by '123456' with grant option

ERROR 1064 (42000): You have an error in your SQL syntaxcheck the manual that

corresponds to your MySQL server version for the right syntax to use near 'ident

ify by '123456' with grant option' at line 1

mysql>delete from where user=''

ERROR 1064 (42000): You have an error in your SQL syntaxcheck the manual that

corresponds to your MySQL server version for the right syntax to use near 'where

user=''' at line 1

mysql>select host,user,password from user

+-----------+------+-------------------------------------------+

| host | user | password |

+-----------+------+-------------------------------------------+

| localhost | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |

| 127.0.0.1 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |

| ::1 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |

| localhost | | |

+-----------+------+-------------------------------------------+

4 rows in set (0.00 sec)

mysql>commit

Query OK, 0 rows affected (0.00 sec)

mysql>flush privileges

Query OK, 0 rows affected (0.00 sec)

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