The first four lines of this code will give you reliable YY DD MM YYYY HH Min Sec variables in XP Pro and higher.
@echo off
for /f "tokens=2 delims==" %%a in ('wmic OS Get localdatetime /value') do set "dt=%%a"
set "YY=%dt:~2,2%" & set "YYYY=%dt:~0,4%" & set "MM=%dt:~4,2%" & set "DD=%dt:~6,2%"
set "HH=%dt:~8,2%" & set "Min=%dt:~10,2%" & set "Sec=%dt:~12,2%"
set "datestamp=%YYYY%%MM%%DD%"
Alter the order of %yyyy%
and %mm%
and %dd%
to suit you and then you can add the variable to Robocopy:
robocopy "E:\Batch Files" "I:\Backups\%datestamp%" /MIR