[alpap]

Еще можно так:

Код:

@echo off
set "d_in=papka_in"
set "d_out=papka_out"
set "pf=%Userprofile%\Desktop\file.txt"
set "s=stroka"
for /f "delims=:" %%a in ('findstr /s /c:"%s%" "%d_in%\*"') do if not exist "%%a" copy "%pf%" "%d_out%\"
pause>nul