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Top Forums Shell Programming and Scripting Increment date in 'for' loop? Post 302142767 by aigles on Monday 29th of October 2007 01:27:23 PM
Old 10-29-2007
Numbers statrting with 0 are evaluated as octal numbers : 070820 is an invalid octal number.

A solution is to force decimal base evaluation :
Code:
#!/bin/sh

startdate=10#`/bin/date --date="10 weeks ago" +%y%m%d`
currentdate=10#`/bin/date +%y%m%d`
mainfolder=/data/backup
mainftp=/ftp/upload/ftpsystem1

for ((foldate=$startdate; $foldate < $currentdate; foldate++))
do
   mkdir $mainfolder/$foldate/system1
   mv $mainftp/*$foldate* $mainfolder/$foldate/system1
done

This script will not give you any error, but i am not sure that the result is what you are expected.
Incrementng the date will give you invalid dates, for example :
070831+1=070832 <= Invalid date
Jean-Pierre.

Last edited by aigles; 10-29-2007 at 03:03 PM..
 

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DATETIMEINTERFACE.FORMAT(3)						 1					       DATETIMEINTERFACE.FORMAT(3)

DateTime::format - Returns date formatted according to given format

       Object oriented style

SYNOPSIS
public string DateTime::format (string $format) DESCRIPTION
string DateTimeImmutable::format (string $format) string DateTimeInterface::format (string $format) Procedural style string date_format (DateTimeInterface $object, string $format) Returns date formatted according to given format. PARAMETERS
o $object -Procedural style only: A DateTime object returned by date_create(3) o $format - Format accepted by date(3). RETURN VALUES
Returns the formatted date string on success or FALSE on failure. EXAMPLES
Example #1 DateTimeInterface.format(3) example Object oriented style <?php $date = new DateTime('2000-01-01'); echo $date->format('Y-m-d H:i:s'); ?> Procedural style <?php $date = date_create('2000-01-01'); echo date_format($date, 'Y-m-d H:i:s'); ?> The above example will output: 2000-01-01 00:00:00 NOTES
This method does not use locales. All output is in English. SEE ALSO
date(3). PHP Documentation Group DATETIMEINTERFACE.FORMAT(3)
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