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

You can also access the date via the variable %DATE%

When testing my system %DATE% produces ffffd dd/mm/yyyy

you can use substring operators to produce the format you desire

ie. running the following on MON 11/12/2018 with US regional settings

%DATE:~3,3% %DATE:~0,3% %DATE:~7,2%

Will produce an output:

11 Mon 12

the substring arguments are
%*variable*:~*startpos*,*numberofchars*%