Переименование файлов с счетчиком

@echo off
 
for /f %%a in (count.txt) do (
set /a count = %%~a
call set /a count += 1
)
 
for %%i in (%*) do (
if %count% lss 10 (rename %%~nxi 000%count%". "%%~nxi)
if %count% lss 100 if %count% geq 10 (rename %%~nxi 00%count%". "%%~nxi)
if %count% lss 1000 if %count% geq 100 (rename %%~nxi 0%count%". "%%~nxi)
if %count% lss 10000 if %count% geq 1000 (rename %%~nxi %count%". "%%~nxi)
)
 
echo. > count.txt
if %count% lss 10000 (echo %count% > count.txt)
if %count% geq 10000 (echo 0 > count.txt)
 
exit

@echo off
powershell -executionpolicy bypass -command "$file=get-content 'C:\test\count.txt'; rename-item '%~1' """$($file[1])%~nx1"""; $file | ForEach-Object {if ([array]::IndexOf($file,"""$_""") -eq 1) {if ($_ -eq '9999') {'0000'} else {([int32]1+$_).ToString("""D4""")}} else {"""$_"""}} | set-content 'C:\test\count.txt'"
pause
exit

@echo off
powershell -executionpolicy bypass -command "$file=get-content 'C:\test\count.txt'; rename-item '%~1' """$($file[1])%~nx1"""; $file | ForEach-Object {if ([array]::IndexOf($file,"""$_""") -eq 1) {if ($_ -eq '9999') {'0000'} else {([int32]1+$_).ToString("""D4""")}} else {"""$_"""}} | set-content 'C:\test\count.txt' -encoding default"
pause
exit

@echo off
 
SetLocal EnableDelayedExpansion
 
set /a m = 0
for /f "usebackq delims=" %%a in ("count.txt") do (
  set /a m += 1
  set "str!m!=%%a"
)                                       
 
echo.%str2%
 
pause

@echo off
powershell -executionpolicy bypass -command "$file=get-content 'C:\test\count.txt'; rename-item '%~1' """$($file[1])%~nx1"""; $file | ForEach-Object {if ([array]::IndexOf($file,"""$_""") -eq 1) {if ($_ -eq '9999') {'0000'} else {([int32]1+$_).ToString("""D4""")}} else {"""$_"""}} | set-content 'C:\test\count.txt' -encoding UTF8"
pause
exit