date batch file

see

http://www.dostips.com/DtTipsDateTime.php that is a starting point julien days -1

this should do part of the job, you'll have to modify last line to create the folder and copy files

@echo off

set /a d=%date:~0,2%
set /a m=%date:~3,2%
set /a y=%date:~6,4%


:loop
   set /a d-=1

   if %d% lss 1 (
      set d=31
      set /a m-=1
     
      if %m% lss 1 (
         set m=12
         set /a y-=1
      )
   )

xcopy /d:%m%-%d%-%y% /h /l "%~f0" "%~f0\" >nul 2>&1 || goto loop

echo %d%/%m%/%y%
set foldername=%y%%m%%d%
md %foldername%

Select allOpen in new window

using powershell

$foldername = [DateTime]::Now.Date.AddDays(-1).ToString('yyyyMMdd')
md "$foldername"
copy c:\Data\*.* -Recurse "c:\$foldername"

My article here shows hwo to get yesterdays date with a single line of VBScript embedded in a batch file.  The example at the bottom there gives you basically what you want:

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

If usign %date% to get the date and time it WILL cause some problems when your date format changes due to running as a different user or PC etc.

echo wscript.echo year(date - 1) ^& right(100 + month(date-1),2) ^& right(100+day(date-1 ),2)  > "%temp%\dateparts.vbs"
for /f "tokens=1 delims=" %%a in ('cscript //nologo "%temp%\dateparts.vbs"') do set yesterday=%%a
echo Yesterday was %yesterday%
md C:\archive\%yesterday%
xcopy /s c:\data\*.* C:\archive\%yesterday%


Steve

Thanks for posting this online.  I used this code in a file naming convention that required today's date -1.

-byd2k

@byd2k

Great, glad it was helpful.

~bp