Request for TCC Date Command Custom Format Example

Aug 16, 2016
31
2
I must be missing something, as I can't get custom formats to work with the Date command. Reading the help page, I though that putting the format in quotes would change the display, but I am obviously wrong. Here are my tests:
C:\ > date /t "YY-MM-DD"
Sun 24/01/2021
C:\ > date /t "%%A"
Sun 24/01/2021
The /f switch does work:
C:\\ > date /t /f0
Sun Jan 24, 2021
but I can't figure out how to display the date in a custom format. I would bet that I'm misunderstanding the documentation, but I would appreciate if someone could please post an example for me. Thank you in advance.
 

Charles Dye

Super Moderator
Staff member
May 20, 2008
4,460
88
Albuquerque, NM
prospero.unm.edu
It confused me too; this feature could certainly stand to be better documented. It turns out that you aren't supped to combine the custom format string with any other options:

Code:
C:\>date "%%Y:%%m:%%d [%%a]"
2021:01:24 [Sun]

C:\>

It looks like you can combine it with /U, but for me that gives an incorrect result:

Code:
C:\>date /u "%%c"
1/24/2021 1:12:55 AM

C:\>

The time is correct, but the date should be the 25th.

(I assume you're using the paid version. This feature is not available in TCC/LE.)
 
May 20, 2008
11,400
99
Syracuse, NY, USA
"/U" doesn't do anything for time with a custom format.

Code:
v:\> time "%%T"
20:28:03

v:\> time /u "%%T"
20:28:04
 

Charles Dye

Super Moderator
Staff member
May 20, 2008
4,460
88
Albuquerque, NM
prospero.unm.edu
Code:
C:\>date "%%T"
18:57:17

C:\>date /u "%%T"
01:57:19

C:\>time "%%T"
18:57:24

C:\>time /u "%%T"
18:57:31

C:\>

It does something in DATE. Maybe not the Right Thing, but something.
 
Aug 16, 2016
31
2
Thank you, Charles. Yes, I have a license for TCC 27.00.16 x64.

Your example is very interesting. But note that the /t switch causes the custom format to be ignored. This isn't mentioned in the documentation.
Code:
C:\\ > date "%%A"
Sunday

C:\\ > date /t "%%A"
Sun 24/01/2021
I don't think that the /u switch gives the incorrect time. On my system here outside of Boston, MA and therefore in EST, /u gives the correct time in GMT. But notice that if I use both /t and /u, the time is not displayed.
Code:
C:\\ > date
Sun 24/01/2021  21:01:08
New date (mm-dd-[yy]yy):

C:\\ > date /u
Mon 25/01/2021  02:01:12
New date (mm-dd-[yy]yy):

C:\\ > date /t /u
Mon 25/01/2021
Thus, the /t switch seems to have more consequences than just suppressing the prompt for a new date. Is that a bug? If not, I believe that the documentation for the Date command needs to be updated.

Thank you again for your help.
 
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