How to get the date N days earlier - China DOS Union Forum

Originally posted by jiulong at 2008-5-26 03:29 PM:
@echo off
set a=%date:~0,4%
set b=%date:~5,2%
set/a c=%date:~8,2%-2
echo The date two days earlier is: %a% year %b% month %c% day
pause

If this solves it, give me some credits ah

[ Last edited by jiulong on 2008-5-26 at 09:03 PM ]

What date is two days before the 1st? The poster above, stop kidding around. Doing it like this will mislead us newbies, hehe, just joking~~ don't mind it

I suggest the OP search carefully, there are still quite a lot of posts with the answer, but calculating the date N days earlier is still rather complicated, leap months and all that (for me it's rather difficult too, I'm still learning as well)

Floor1　yaootaa	Posted 2008-05-23 17:38
新手上路　Posts 3　Credits 10
If the current date returned by date is 2008-05-23, then under DOS how can I get the date N days earlier, for example 2 days earlier would be 2008-05-21

Floor2　lxmxn	Posted 2008-05-24 15:01
版主　Posts 4,938　Credits 11,386
Does the DOS you mean refer to the DOS system or the CMD environment?

Floor3　jiulong	Posted 2008-05-26 15:29
中级用户　Posts 183　Credits 396
@echo off set a=%date:~0,4% set b=%date:~5,2% set/a c=%date:~8,2%-2 echo The date two days earlier is: %a% year %b% month %c% day pause If this solves it, give me some credits ah [ Last edited by jiulong on 2008-5-26 at 09:03 PM ]

Floor4　easonL	Posted 2008-05-30 15:04
初级用户　Posts 56　Credits 118　From 南京
Originally posted by jiulong at 2008-5-26 03:29 PM: @echo off set a=%date:~0,4% set b=%date:~5,2% set/a c=%date:~8,2%-2 echo The date two days earlier is: %a% year %b% month %c% day pause If this solves it, give me some credits ah [ Last edited by jiulong on 2008-5-26 at 09:03 PM ] What date is two days before the 1st? The poster above, stop kidding around. Doing it like this will mislead us newbies, hehe, just joking~~ don't mind it I suggest the OP search carefully, there are still quite a lot of posts with the answer, but calculating the date N days earlier is still rather complicated, leap months and all that (for me it's rather difficult too, I'm still learning as well)