Windows 批量修改文件名字

编写.bat文件

@echo off
set a=0
setlocal EnableDelayedExpansion
dir /b .\*.png | find /c /v "" >> .\tmp.txt
set /p c=<.\tmp.txt
del /a /f /q .\tmp.txt 

for %%i in (*.png) do (
set /a a+=1
if !a! gtr %c% (goto aa)
echo !a!
echo %%i 
ren "%%i" "!a!.png"
)
:aa