Re: Daily Backup


set /a yest=%somedate% -1 can't be done
i explictily wrote " %day% -1 where day is number -for example 06 not the whole date in your case -- 09/07/2008 - 1 ????

in for loop you cant use delims=. if your date format is dd/mm/yyyy but delims=/

also i don't understand what are yours modifications and why.i cant find the logic explanation.
before scripting go google and learn the basics before you make your script modifications.

DD wrote:
Getting the error Divide by zero error.10 was unexpected at this time.

The folder generated by the application is this format 20080709, will it be any issue.

C:\Data\Batch>backup.bat

C:\Data\Batch>FOR /F "tokens=1* delims= " %A IN ('DATE/T') DO IF "%B" == "" (
SET
Date=%A
) ELSE (SET Date=%B )

C:\Data\Batch>IF "07/09/2008 " == "" (
SET
Date=Wed
) ELSE (SET Date=07/09/2008 )

C:\Data\Batch>for /F "Tokens=1-4 Delims=. " %i in ('echo.07/09/2008 ') do set da
y=%i

C:\Data\Batch>set day=07/09/2008

C:\Data\Batch>for /F "Tokens=1-4 Delims=. " %i in ('echo.07/09/2008 ') do set mo
nth=%j

C:\Data\Batch>set month=

C:\Data\Batch>for /F "Tokens=1-4 Delims=. " %i in ('echo.07/09/2008 ') do set ye
ar=%k

C:\Data\Batch>set year=

C:\Data\Batch>set dt=--07/09/2008 ***today date

C:\Data\Batch>set /A yesterday=07/09/2008 - 1
Divide by zero error.
10 was unexpected at this time.
C:\Data\Batch>if LSS 10 set yesterday=0
C:\Data\Batch>


"Tom" <"znjicki[spam]" wrote:

FOR /F "tokens=1* delims= " %%A IN ('DATE/T') DO IF "%%B"=="" (SET Date=%%A) ELSE (SET Date=%%B)
for /f "Tokens=1-4 Delims=. " %%i in ('echo.%date%') do set day=%%i
for /f "Tokens=1-4 Delims=. " %%i in ('echo.%date%') do set month=%%j
for /f "Tokens=1-4 Delims=. " %%i in ('echo.%date%') do set year=%%k

set dt=%day%-%month%-%year% ***today date

set /A yesterday=%day% - 1

if %yesterday% LSS 10 set yesterday=0%yesterday%

set yesterdate=%yesterday%-%month%-%year% *** yesterday date

xcopy c:\Program Files\Logger\Channel1\%yesterdate% e:\data

----all this in some batch file and schedule it to run

This is example but it doesnt include if it is a leap year or if it is the first day of the month. To do that you must add sevaral different subrutines..

look at http://www.robvanderwoude.com/datetiment.html#Yesterday


DD wrote:
Soory, my question may be not clear in my first port.

In windows, how to write a batch to copy yesterday's date folder to anothere directory.

I see a lot of post in Unix but not sure how to do it in windows.



"DD" wrote:

Everyday the program will generate the new folder using the ddmmyyyy format.

I want to backup the folder with yesterday's data using the backup schedule job.

how to create the backup batch file.

@echo off

xcopy c:\Program Files\Logger\Channel 1\ddmmyy e:\data, how to make it so that the batch job know it's yesterday date folder.

.

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