How to append a date in batch files

Question

I have the following line in a batch file (that runs on an old Windows 2000 box):

7z a QuickBackup.zip *.backup

How do I append the date to

Answer 1

@SETLOCAL ENABLEDELAYEDEXPANSION

@REM Use WMIC to retrieve date and time
@echo off
FOR /F "skip=1 tokens=1-6" %%A IN ('WMIC Path Win32_LocalTime Get Day^,Hour^,Minute^,Month^,Second^,Year /Format:table') DO (
    IF NOT "%%~F"=="" (
        SET /A SortDate = 10000 * %%F + 100 * %%D + %%A
        set YEAR=!SortDate:~0,4!
        set MON=!SortDate:~4,2!
        set DAY=!SortDate:~6,2!
        @REM Add 1000000 so as to force a prepended 0 if hours less than 10
        SET /A SortTime = 1000000 + 10000 * %%B + 100 * %%C + %%E
        set HOUR=!SortTime:~1,2!
        set MIN=!SortTime:~3,2!
        set SEC=!SortTime:~5,2!
    )
)
@echo on
@echo DATE=%DATE%, TIME=%TIME%
@echo HOUR=!HOUR! MIN=!MIN! SEC=!SEC!
@echo YR=!YEAR! MON=!MON! DAY=!DAY! 
@echo DATECODE= '!YEAR!!MON!!DAY!!HOUR!!MIN!' 

Output:

DATE=2015-05-20, TIME= 1:30:38.59
HOUR=01 MIN=30 SEC=38
YR=2015 MON=05 DAY=20
DATECODE= '201505200130'