重置mysql的root密码方法有很多，本文介绍的这个是使用批处理来完成的
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@echo off
title mysql
::从注册表找到mysql的安装路径写入文件mysql.txt
reg query hklm\system\controlset001\services\mysql | find /i "imagepath">c:\mysql.txt
if %errorlevel% neq 0 (
echo mysql not found
pause
exit
)
::以”为分隔符，截取第二段内容保存到变量mysqlpath
for /f tokens^=2^ delims^=^" %%i in (c:\mysql.txt) do set mysqlpath=%%i
del c:\mysql.txt /f
::路径中/替换为\
set mysqlpath=%mysqlpath:/=\%
::删除路径最后一个字符（该字符不可见，可能是回车换行之类的）
set mysqlpath=%mysqlpath:~0,-1%
:backtomain
::取得路径最后一个字符看等不等于\
set character=%mysqlpath:~-1,1%
::如果最后一个字符不等于\，那么跳转到getpath删除mysqlpath的最后一个字符
if not %character% == \ goto getpath
::进入mysql安装路径c:\program files\mysql\mysql server 5.0\bin
cd /d "%mysqlpath%"
::echo %mysqlpath%
if %errorlevel% neq 0 (
echo mysql not found
pause
exit
) www.jb51.net
::禁用mysql服务，跳过权限验证修改密码
taskkill /f /im mysqld-nt.exe
net stop mysql >nul
start /b mysqld-nt --skip-grant-tables
ping -n 2 127.0.0.1 >nul
echo use mysql >c:\config.tmp
echo update user set password=password("") where user="root";>>c:\config.tmp
echo flush privileges; >>c:\config.tmp
echo exit >>c:\config.tmp
::因为是交互式，所以从文件读取内容
mysql <c:\config.tmp
taskkill /f /im mysqld-nt.exe
net stop mysql >nul
net start mysql
del c:\config.tmp /f
pause
exit
::删除路径最后一个字符，跳回主程序
:getpath
set mysqlpath=%mysqlpath:~0,-1%
goto backtomain
如果是用wamp一键安装需要改一些脚本，主要是注册表搜索路径改变，返回值改变，服务名改变了，mysql安装路径变成d:\wamp\bin\mysql\mysql5.5.24\bin，少了mysqld-nt这个东西，进程里面也没有mysqld-nt.exe
@echo off
title mysql
reg query hklm\system\controlset001\services\wampmysqld | find /i "imagepath">c:\mysql.txt
if %errorlevel% neq 0 (
echo mysql not found
pause
exit
)
for /f "tokens=3 delims= " %%i in (c:\mysql.txt) do set mysqlpath=%%i
del c:\mysql.txt /f
set mysqlpath=%mysqlpath:/=\%
set mysqlpath=%mysqlpath:~0,-1%
:backtomain
set character=%mysqlpath:~-1,1%
if not %character% == \ goto getpath
cd /d "%mysqlpath%"
::echo %mysqlpath%
if %errorlevel% neq 0 (
echo mysql not found
pause
exit
)
taskkill /f /im mysqld.exe
net stop wampmysqld >nul
start /b mysqld -nt --skip-grant-tables
ping -n 2 127.0.0.1 >nul
echo use mysql >c:\config.tmp
echo update user set password=password("") where user="root";>>c:\config.tmp
echo flush privileges; >>c:\config.tmp
echo exit >>c:\config.tmp
mysql <c:\config.tmp
taskkill /f /im mysqld.exe
net stop wampmysqld >nul
net start wampmysqld
del c:\config.tmp /f
pause
exit
:getpath
set mysqlpath=%mysqlpath:~0,-1%
goto backtomain
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