Шаблон для фильтрации файлов с именами из восьми цифр

chcp 1251 >nul
@echo off
set thePath_1=G:\tmp
set prefix_1=до235 - 
for /f "delims=" %%i in ('dir /b /a-d "%thePath_1%\????????.doc"') do (ren "%thePath_1%\%%i" "%prefix_1%%%i")

<# :
  @echo off
    powershell /nop /ex bypass /com ^
    "&{[ScriptBlock]::Create((gc '%~f0') -join [Char]10).Invoke()}"
  exit /b
#>
 
ls G:\tmp | ? {!$_.PSIsContainer -and $_.BaseName.Length -eq 8 -and ([Regex]'\b\d+(?!\w+)\.doc\b').IsMatch($_.Name)} |
% {$i = 1}{ren $_.Name "$($_.BaseName)_до235 - $i$($_.Extension)";$i++}

@echo off
SetLocal EnableExtensions
 
set "prefix_1=Ухвала 2015 - "
set thePath_1=G:\tmp
 
call :renme "%thePath_1%" "%prefix_1%"
 
 
pause
goto :eof
 
:renme [Path] [Prefix]
for /f "delims=" %%i in ('dir /b /a-d "%~1\????????.doc"^|findstr /RC:"^[\][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]\.doc$"') do ren "%~1\%%i" "%~2%%i"
exit /b

powershell -nop -ex bypass "&{dir '.\test\*','.\test\1\*','.\test\2\*' -rec -inc *.doc|%{$m=([regex]'^(\d+)$').Match($_.BaseName);if ($m.Success){ren $_ "Ухвала 2015 -$($_.name)" -WhatIf}}}"

@echo off
 
>nul chcp 1251
 
set "thePath_1=G:\tmp"
set "prefix_1=до235 - "
 
set "n=8"
set "p=.doc"
 
pushd "%thePath_1%"&& ((for /f "delims=" %%i in ('
 2^>nul dir/a-d/b "*%p%"^| cmd/v/c "(for /l %%i in (1 1 %n%) do @set p=[0-9]!p:.^^=\.!)& findstr/ix !p!"
') do ren "%%i" "%prefix_1%%%i")& popd)
 
exit/b

pause