@echo off
set testconf=abc
if "%testconf%"=="!testconf!" goto okcmd
echo You mist activate extended expansion of variables
echo calling cmd with /V:ON option. After that, you can
echo re-execute me to obtain the output that you can check
echo and then execute as batch, in order to rename the shortcuts
exit /B 1

:okcmd
@for %%j in (*.lnk) do (
     @set nome=%%~fj
     @set nomep=%%j
     rem Instead of "Shortcut to " you can put your language specific
     rem string, e.g. "Collegamento a " in Italian. Should this string
     rem be taken from somewhere? But... from where?
     if "!nomep:~0,15!" == "Shortcut to " @echo rename "!nome!" "!nomep:Shortcut to =!"
)

rem now we do the same in the subfolders, and
rem so on...
set nomecmd=%~f0
@for /D %%i in (*) do (
  @pushd %%i
  "%nomecmd%"
  @popd
)