@echo off 

title mysql 

::从注册表找到Mysql的安装路径写入文件mysql.txt 
reg query HKLMSYSTEMControlSet001ServicesMySQL | 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 FilesMySQLMySQL Server 5.0bin 
cd /d "%mysqlPath%" 

::echo %mysqlPath% 

if %errorlevel% neq 0 ( 
echo MySQL not found 
pause 
exit 
) 

::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 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

@echo off 

title mysql 

reg query HKLMSYSTEMControlSet001Serviceswampmysqld | 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 nul 
net start wampmysqld 
del C:config.tmp /F 

pause 
exit 

:GETPATH 
set mysqlPath=%mysqlPath:~0,-1% 
goto BACKTOMAIN