Hi,
I need help to toggle through dates on a weekly basis to be fed into a script as inputs. The format should be: yyyy/mm/dd (start) yyyy/mm/dd (end), where end date is 7 days increments.
The date (start) would be input as an ARGV and would continue until current date.
I can check current date as follows:
is there any perl function that would toggle through by a week.
And if the Start Date is say Not Sunday, then the start date should be adjusted to the next nearest Sunday.
thank you
Subha
---------- Post updated at 06:57 PM ---------- Previous update was at 12:23 PM ----------
#!/usr/bin/perl -w
use strict;
use warnings;
use Time::Local;
if ($#ARGV < 0)
{
die "Usage dates <input arg> : format is yyyy/mm/dd\n ";
exit (1);
}
my $start_date = $ARGV[0];
my $time = 0;
my $end_time = time;
print "Start Date: $start_date \n";
print "End Date: $end_time \n";
my @dates = split ('/', $start_date);
my $syyyy = $dates[0];
my $smm = $dates[1];
my $sdd = $dates[2];
$smm = $smm - 1;
$time = timelocal(0,0,0,$sdd,$smm,$syyyy);
print "Start time entered:", scalar(localtime($time)), "\n";
I need to create 12 variables, the first of which is the date of the first day of the current month (01/01/2006), and the remaining 11 are to equal each month after the current.
var1 = 01/01/2006
var2 = 02/01/2006
var3 = 03/01/2006
var4 = 04/01/2006
etc.
How can I easily do this is in... (7 Replies)
How to find the Day of the Week of the given Date using perl?
If I have a date in YYY--MM-DD format, how to find the DOW? Based on that, I need to find the following sunday.
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Hello friends,
I am looking for a script or method that can display all the dates between any 2 given dates.
Input:
Date 1
290109
Date 2
010209
Output:
300109
310109
Please help me. Thanks. :):confused: (2 Replies)
Hi,
Is there any way I can get the difference between two dates in terms of days?
I have used this method so far, but I cant format it in terms of days.
@a=&DateCalc($date1,$date2,0);
The o/p that I am getting is sort of like this:
+0:0:0:4:0:0:0
I just want to get 4 days as an o/p.... (1 Reply)
Hi guys,
First of all, I would like to say this is my first post in the unix.com forums. I am a beginner in PERL and have only started writing my first scripts.
With that out of the way, I have a question regarding the calculation of time dates in PERL.
I have two scalar variables with the... (1 Reply)
I have a directory of backup files.
named like this:
ldap.data.04-06-2012.tar
ldap.data.03-06-2012.tar
ldap.data.02-06-2012.tar
ldap.data.01-06-2012.tar
ldap.data.31-05-2012.tar
ldap.data.30-05-2012.tar
ldap.data.29-05-2012.tar
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Hello folks,
I am looking for a Perl module or a program logic that gives the startdate and enddate of the last week..
Suppose say, assuming this week starts from Sunday to Saturday
If I execute the script in this week. I need to get the last week sunday's date.
Could anyone please... (1 Reply)
Below are my custom period start and end dates based on a calender, these dates are placed in a file, for each period i need to split into three weeks for each period row, example is given below.
Could you please help out to achieve solution through shell script..
File content:
... (2 Replies)
Discussion started by: nani2019
2 Replies
LEARN ABOUT REDHAT
time::local
Time::Local(3pm) Perl Programmers Reference Guide Time::Local(3pm)NAME
Time::Local - efficiently compute time from local and GMT time
SYNOPSIS
$time = timelocal($sec,$min,$hour,$mday,$mon,$year);
$time = timegm($sec,$min,$hour,$mday,$mon,$year);
DESCRIPTION
These routines are the inverse of built-in perl functions localtime() and gmtime(). They accept a date as a six-element array, and return
the corresponding time(2) value in seconds since the Epoch (Midnight, January 1, 1970). This value can be positive or negative.
It is worth drawing particular attention to the expected ranges for the values provided. The value for the day of the month is the actual
day (ie 1..31), while the month is the number of months since January (0..11). This is consistent with the values returned from local-
time() and gmtime().
The timelocal() and timegm() functions perform range checking on the input $sec, $min, $hour, $mday, and $mon values by default. If you'd
rather they didn't, you can explicitly import the timelocal_nocheck() and timegm_nocheck() functions.
use Time::Local 'timelocal_nocheck';
{
# The 365th day of 1999
print scalar localtime timelocal_nocheck 0,0,0,365,0,99;
# The twenty thousandth day since 1970
print scalar localtime timelocal_nocheck 0,0,0,20000,0,70;
# And even the 10,000,000th second since 1999!
print scalar localtime timelocal_nocheck 10000000,0,0,1,0,99;
}
Your mileage may vary when trying these with minutes and hours, and it doesn't work at all for months.
Strictly speaking, the year should also be specified in a form consistent with localtime(), i.e. the offset from 1900. In order to make
the interpretation of the year easier for humans, however, who are more accustomed to seeing years as two-digit or four-digit values, the
following conventions are followed:
o Years greater than 999 are interpreted as being the actual year, rather than the offset from 1900. Thus, 1963 would indicate the year
Martin Luther King won the Nobel prize, not the year 2863.
o Years in the range 100..999 are interpreted as offset from 1900, so that 112 indicates 2012. This rule also applies to years less than
zero (but see note below regarding date range).
o Years in the range 0..99 are interpreted as shorthand for years in the rolling "current century," defined as 50 years on either side of
the current year. Thus, today, in 1999, 0 would refer to 2000, and 45 to 2045, but 55 would refer to 1955. Twenty years from now, 55
would instead refer to 2055. This is messy, but matches the way people currently think about two digit dates. Whenever possible, use
an absolute four digit year instead.
The scheme above allows interpretation of a wide range of dates, particularly if 4-digit years are used.
Please note, however, that the range of dates that can be actually be handled depends on the size of an integer (time_t) on a given plat-
form. Currently, this is 32 bits for most systems, yielding an approximate range from Dec 1901 to Jan 2038.
Both timelocal() and timegm() croak if given dates outside the supported range.
IMPLEMENTATION
These routines are quite efficient and yet are always guaranteed to agree with localtime() and gmtime(). We manage this by caching the
start times of any months we've seen before. If we know the start time of the month, we can always calculate any time within the month.
The start times are calculated using a mathematical formula. Unlike other algorithms that do multiple calls to gmtime().
timelocal() is implemented using the same cache. We just assume that we're translating a GMT time, and then fudge it when we're done for
the timezone and daylight savings arguments. Note that the timezone is evaluated for each date because countries occasionally change their
official timezones. Assuming that localtime() corrects for these changes, this routine will also be correct.
BUGS
The whole scheme for interpreting two-digit years can be considered a bug.
The proclivity to croak() is probably a bug.
perl v5.8.0 2002-06-01 Time::Local(3pm)