genSerial

genSerial.bat文件

@echo off

set %0~SNFile=%SNFile%

set %0~SN=%SN%

set %0~result=

set SNFile=SN.txt

if "%1" =="reset" (

set /a SN=0

goto save

)

if exist %SNFile% (

for /f %%i in (%SNFile%) do set /a SN=%%i

set /a SN+=1

) else (

set /a SN=0

)

:save

echo %SN% >%SNFile%

set %0~result=%SN%

set SNFile=!%0~SNFile!

set SN=!%0~SN!

使用实例1 ：

@echo off

Setlocal enabledelayedexpansion

set path=%path%;%cd%\lib

call genSerial

set serial=%genSerial~result%

echo the serial is %serial%

call genSerial

set serial=!genSerial~result!

echo the serial is %serial%

call genSerial reset

set serial=!genSerial~result!

echo after reset,the serial is %serial%

pause