@echo off
set /a num=1
setlocal enabledelayedexpansion
for /f "delims=" %%i in ('dir /s  /b "%~1\"') do ren "%%~i" "%~n1!num!%%~xi" & set /a num+=1
pause
pause
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@echo on
set oldname=?
set newname=?
set num=0
setlocal enabledelayedexpansion
for /f "delims=" %%a in ('dir /a-d /s  /b "%~1"') do (
set f=%%~a
set h=%%~xa
set d=%%~dpa
set s=%%~pa
set s=!s:~0,-1!
call :t "!s!"
:here
echo.
(if "!newname!" equ "!oldnanme!" (
:rename1
set /a num+=1
if exist "!d!!newname!!num!!h!" (call :rename1) else (
ren "!f!" "!newname!!num!!h!"
)
) else (
set /a num=0 
:rename2
set /a num+=1
if exist "!d!!newname!!num!!h!" (call :rename2 ) else (
ren "!f!" "!newname!!num!!h!"
set "oldname=!newname!"
)
)
)
)
goto :eof

:t
set "newname=%~n1"
goto :eof
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