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Need to format the current date to YYYYMMDD

Posted on 2011-09-23
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I have a batch file that is going to be called automatically.  It looks for a file that will have the current date as part of the file name.  I need a DOS script that can take the current date, transform it to the format YYYYMMDD and then append that to the base of the file name in order to process the file.  As an example, the base of the file name is ABC- so the script needs to get the current date and append it as follows:

ABC-20110923.csv

I have been trouble finding information on how to do that.

Thanks for your help.
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Question by:techhound
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5 Comments
 
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by:Steve Knight
Steve Knight earned 1000 total points
ID: 36587220
From a question I am answering at the moment.  have a look at my article on this subject below too:

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/MS_DOS/A_1153-Using-dates-in-batch-files-scripts.html


http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/MS_DOS/Q_27323611.html?cid=1573#a36586727

@echo off  
REM See http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/MS_DOS/A_1153-Using-dates-in-batch-files-scripts.html for dates info.  
REM Steve Knight (http://scripts.dragon-it.co.uk)  
REM Gets two bits from vbscript -- day and yyyy-mm-dd  
 
set log=c:\logfile.txt  
set script="%temp%\dateparts.vbs"  
  echo wscript.echo year(date) ^& right(100 + month(date),2) ^& right(100+day(date),2) > %script%  
  for /f "tokens=1 delims=," %%a in ('cscript //nologo %script%') do (set yyyymmdd=%%a)
del %script%  

echo Variable %yyyymmdd% is the date now.

Steve
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Expert Comment

by:Steve Knight
ID: 36587231
The "easy" way as shown involving %date% is difficult when using different machines, OS's or logins as the format changes.  VBScript will work the same every time.
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DerZauberer earned 1000 total points
ID: 36587307
I have a german windows, so the date format is 23.09.2011. Maybe you have to change the start indices inside the string.

echo %date%
set name=ABC-%date:~6,4%%date:~3,2%%date:~0,2%.csv
echo %name%
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by:Steve Knight
ID: 36587410
Which proves my point :-)
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Expert Comment

by:Bill Prew
ID: 36587749
Steve's article has some great approaches to this.  

I'll just add that I often use a tiny free utility called DOFF for this which can be found at:

http://www.jfitz.com/dos/index.html#DOFF

If that's any interest to you and you have questions let me know.

~bp

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