How to add DATE & TIME to a FILENAME when copied to another location?

Yes its .bat file

Excellent!   This one line helps me greatly...!

Thanks Knight!

Knight,

The solution you provided did work initially and now the same gives me syntax is incorrect. Could you pls advise what's wrong?

C:\>copy a.txt c:\batch\myfile_%date:~10,4%%date:~7,2%%date:~4,2%_%time:~0,2%%time
:~3,2%%time:~6,2%.txt
The syntax of the command is incorrect.

well, it should all be on one line - perhaps that much is obvious, but it cut-n-pasted to two lines from your post.

Also, I just noticed that I accidentally swapped the day and the month, so it should be this instead:

copy a.txt c:\batch\myfile_%date:~10,4%%date:~4,2%%date:~7,2%_%time:~0,2%%time:~3,2%%time:~6,2%.txt

so the only change i made was to swap the 4 and the 7 (to switch the month and day), and made it all one line.

Thanks Knight for the quick response.   You see as 2 lines due to command line window size. In place  of copy and paste, i typed the whole syntax and still the same error. :(

C:\>copy a.txt c:\batch\myfile_%date:~10,4%%date:~4,2%%date:~7,2%_%time:~0,2%%ti
me:~3,2%%time:~6,2%.txt
The syntax of the command is incorrect.

I suspect the problem could have to do with the default timezone settings for your location.

 Please run this command and post the result:

    @echo  %date%  %time%

 FYI - the result of this command in my timezone looks like this:

  Thu 11/12/2009  10:21:15.52

C:\>  @echo  %date%  %time%
 Thu 11/12/2009   9:22:47.63

ah-ha!  lol, you're going to love this...

if you look at the whole filename you will see a space, because it is before 10am where you are.  Do this:

@echo c:\batch\myfile_%date:~10,4%%date:~4,2%%date:~7,2%_%time:~0,2%%time:~3,2%%time:~6,2%.txt

so, let me just work out how to get rid of that space and I'll get right back to you...

You are right..  There is a space before timestamp 93028
C:\>@echo c:\batch\myfile_%date:~10,4%%date:~4,2%%date:~7,2%_%time:~0,2%%time:~3
,2%%time:~6,2%.txt
c:\batch\myfile_20091112_ 93028.txt

right, so the only way I know to remove that is to set it in a separate variable first, and then substitute the space for a zero:

set today=%date:~10,4%%date:~4,2%%date:~7,2%
set rightnow=%time:~0,2%%time:~3,2%%time:~6,2%
@echo The file will be: c:\batch\myfile_%today%_%rightnow: =0%.txt
copy  a.txt  c:\batch\myfile_%today%_%rightnow: =0%.txt

or perhaps better is this:

set today=%date:~10,4%%date:~4,2%%date:~7,2%
set rightnow=%time:~0,2%%time:~3,2%%time:~6,2%
set rightnow=%rightnow: =0%

@echo The file will be: c:\batch\myfile_%today%_%rightnow%.txt
copy  a.txt  c:\batch\myfile_%today%_%rightnow%.txt