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Full Discussion: General Purpose Date Script
Top Forums UNIX for Beginners Questions & Answers General Purpose Date Script Post 302868067 by targzeta on Friday 25th of October 2013 06:29:23 PM
Old 10-25-2013
I think the problem is with daylight saving time. But, see this:
Code:
# 1) correct
$> perl date.pl -d 'now + 3 days'
2013-10-28 23:24:14
$> date -d 'now + 3 days'
Mon Oct 28 23:24:20 CET 2013

#2) error:
$> perl date.pl -d '2013/10/25 + 3 days'
2013-10-27 23:00:00
$> date -d '2013/10/25 + 3 days'
Mon Oct 28 00:00:00 CET 2013

I hope this can help you,
Emanuele
This User Gave Thanks to targzeta For This Post:
 

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Time::Seconds(3pm)					 Perl Programmers Reference Guide					Time::Seconds(3pm)

NAME
Time::Seconds - a simple API to convert seconds to other date values SYNOPSIS
use Time::Piece; use Time::Seconds; my $t = localtime; $t += ONE_DAY; my $t2 = localtime; my $s = $t - $t2; print "Difference is: ", $s->days, " "; DESCRIPTION
This module is part of the Time::Piece distribution. It allows the user to find out the number of minutes, hours, days, weeks or years in a given number of seconds. It is returned by Time::Piece when you delta two Time::Piece objects. Time::Seconds also exports the following constants: ONE_DAY ONE_WEEK ONE_HOUR ONE_MINUTE ONE_MONTH ONE_YEAR ONE_FINANCIAL_MONTH LEAP_YEAR NON_LEAP_YEAR Since perl does not (yet?) support constant objects, these constants are in seconds only, so you cannot, for example, do this: "print ONE_WEEK->minutes;" METHODS
The following methods are available: my $val = Time::Seconds->new(SECONDS) $val->seconds; $val->minutes; $val->hours; $val->days; $val->weeks; $val->months; $val->financial_months; # 30 days $val->years; $val->pretty; # gives English representation of the delta The usual arithmetic (+,-,+=,-=) is also available on the objects. The methods make the assumption that there are 24 hours in a day, 7 days in a week, 365.24225 days in a year and 12 months in a year. (from The Calendar FAQ at http://www.tondering.dk/claus/calendar.html) AUTHOR
Matt Sergeant, matt@sergeant.org Tobias Brox, tobiasb@tobiasb.funcom.com BalieXXzs SzabieXX (dLux), dlux@kapu.hu LICENSE
Please see Time::Piece for the license. Bugs Currently the methods aren't as efficient as they could be, for reasons of clarity. This is probably a bad idea. perl v5.16.3 2013-03-04 Time::Seconds(3pm)
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