[AHTuKuJIJIeP]

Код:

@echo off
rem Пример единоразового копирования файла filename.txt
title=Copier of files
SetLocal EnableExtensions EnableDelayedExpansion
SET DD=%DATE:~0,2%
echo %DD% | findstr "20 21 22 23 24 25 26 27 28 29 30" >nul
if !errorlevel!==0 (
if exist C:\DIR1\filename.txt (
if not exist C:\DIR2\filename.txt (
copy C:\DIR1\filename.txt C:\DIR2\filename.txt
)
)
)