Sponsored Content
Top Forums UNIX for Dummies Questions & Answers How to add an hour or a minute to a time? Post 302541628 by irudayaraj on Monday 25th of July 2011 08:15:50 AM
Old 07-25-2011
Thanks. Its working fine.
I have

my code:

Code:
my $date_var = "Jun  6 2011  8:02AM";
if ($date_var != '')
{
my $min_to_add = 1 * 1 * 60;
my $from_dt = qx/
  date -d "$date_var" +%s
  / + $min_to_add;
my $min_var = strftime( '%B %d %Y %I:%M%p', localtime $from_dt );
print("\n the mins added  is $min_var\n");

my $hr_to_add = 1 * 60 * 60;
my $to_dt = qx/
  date -d "$min_var" +%s
  / + $hr_to_add;
my $hr_var = strftime( '%B %d %Y %I:%M%p', localtime $to_dt );
print("\n the hours  added is $hr_var\n");
}
else
{
use POSIX qw(strftime);
my $to_dt = strftime "%b %d %Y %H:%M%p", localtime;
print("\n The original time is  $to_dt\n");
my $hr_to_sub = 1 * 1 * 86400;
my $from_dt
 = qx/
  date -d "$to_dt" +%s
  / - $hr_to_sub;
my $to_dt_now = strftime( '%B %d %Y %H:%M%p', localtime $from_dt );
print("\n the to date now  is $to_dt_now \n");
}


When am executing this as a whole, the if condition does the opposite.

when $date_var != '' then it goes to the else part,
when $date_var == '' then it does the if loop part which is not supposed to be.

why is this so?

Last edited by radoulov; 07-25-2011 at 11:44 AM.. Reason: Code tags.
 

10 More Discussions You Might Find Interesting

1. Linux

How to add and extra hour to the start time

Hi Actually what am trying to ask is , i have an shell script ,now i want to run this shell script for one hour continuously and after one hour it has to stop automatically. can any one suggest me how to automate the shell script ? we tried wth the getting the start time and add ing an hour... (8 Replies)
Discussion started by: lalitka
8 Replies

2. Shell Programming and Scripting

Time difference in Minute in UNIX

is there any ways to get the time difference between 2 dates in UNIX? for example, For below date the outut should come 22 minutes startdate enddate ========= ======= 06/17/2008 13:25 06/17/2008 13:47 For, below date, the output should come 1462 minutes ... (5 Replies)
Discussion started by: Amit.Sagpariya
5 Replies

3. AIX

Time getting reduced by 1 hour

I am setting TZ=EST5EDT,M3.2.0/02:00:00,M11.1.0/02:00:00 Then Setting the date to Mar 14 01:40 EST date 0314014010 Sun Mar 14 01:40:36 EDT 2010 Note that it show it EST. According to my TZ variable 01:40 Should be in EST only. On executing date command once again it shows date Sun Mar... (4 Replies)
Discussion started by: januuj23
4 Replies

4. Shell Programming and Scripting

Crontab for every minute or every hour

How to set crontab for every minute or every hour (1 Reply)
Discussion started by: kaushik02018
1 Replies

5. Shell Programming and Scripting

counting word xx referred to a time period, like minute or hour

Hello, I try to insert a post because I've got a trouble to perform a unix job. But I didn't found which steps (procedure) I should follow. Could you help me? I got a log by my Application box, like following: gbosmam037:test >view Log_Server.csv ... (2 Replies)
Discussion started by: maluca68
2 Replies

6. Shell Programming and Scripting

Doing math on 24 hour time base

I'm trying to do some simple math on a 24 hour time base. The time is in the format of HM (HoursMinutes) For example: 2330 #23:30 1800 #18:00 730 #07:30 my problem is with the single-digit hours. If the time is 2200, I use this code: baseTime=2200 minutes=${baseTime:2:3}... (3 Replies)
Discussion started by: jondecker76
3 Replies

7. AIX

crontab 1 hour off from current time

This is a new one on me. We upgraded a system from AIX 5.3 TL 7 to 6.1 TL 7 yesterday. The app people notified us that their cron jobs weren't running at the right time. So I made a test cron entry and here's what I've found: # crontab -l * * * * * /usr/bin/date > /tmp/test.log 2>&1 # cat... (2 Replies)
Discussion started by: homeyjoe
2 Replies

8. Shell Programming and Scripting

add one hour to each time field

Hello All, Is there any *easy* and efficient way to add "one hour" to few fields in a file? . I have done this using a python script and it has hit with performance issues. I have around 200mi of records, which I need to modify and send across in one hour. sample input: '2012-10-17... (2 Replies)
Discussion started by: panyam
2 Replies

9. Shell Programming and Scripting

How to convert 24 hour time to 12 hour timing?

Hi friends, I want to convert 24 hour timing to 12 hour please help me... my data file looks like this.. 13-Nov-2011 13:27:36 15.32044 72.68502 13-Nov-2011 12:08:31 15.31291 72.69807 16-Nov-2011 01:16:54 15.30844 72.74028 15-Nov-2011 20:09:25 15.35096 ... (13 Replies)
Discussion started by: nex_asp
13 Replies

10. Shell Programming and Scripting

[solved] Awk/shell question to parse hour minute from text

Hi, I have a quick question on parsing the hour/minute and value from a text file and remove the seconds portion. For example in the below text file: 20:26:01 95.83 20:27:01 96.06 20:28:01 95.99 20:29:01 7.11 20:30:01 5.16 20:31:01 8.27 20:32:02 9.79 20:33:01 11.27 20:34:01 7.83... (2 Replies)
Discussion started by: satishrao
2 Replies
Time::CTime(3pm)					User Contributed Perl Documentation					  Time::CTime(3pm)

NAME
Time::CTime -- format times ala POSIX asctime SYNOPSIS
use Time::CTime print ctime(time); print asctime(localtime(time)); print strftime(template, localtime(time)); strftime conversions %% PERCENT %a day of the week abbr %A day of the week %b month abbr %B month %c ctime format: Sat Nov 19 21:05:57 1994 %d DD %D MM/DD/YY %e numeric day of the month %f floating point seconds (milliseconds): .314 %F floating point seconds (microseconds): .314159 %h month abbr %H hour, 24 hour clock, leading 0's) %I hour, 12 hour clock, leading 0's) %j day of the year %k hour %l hour, 12 hour clock %m month number, starting with 1, leading 0's %M minute, leading 0's %n NEWLINE %o ornate day of month -- "1st", "2nd", "25th", etc. %p AM or PM %r time format: 09:05:57 PM %R time format: 21:05 %S seconds, leading 0's %t TAB %T time format: 21:05:57 %U week number, Sunday as first day of week %v DD-Mon-Year %w day of the week, numerically, Sunday == 0 %W week number, Monday as first day of week %x date format: 11/19/94 %X time format: 21:05:57 %y year (2 digits) %Y year (4 digits) %Z timezone in ascii. eg: PST DESCRIPTION
This module provides routines to format dates. They correspond to the libc routines. &strftime() supports a pretty good set of coversions -- more than most C libraries. strftime supports a pretty good set of conversions. The POSIX module has very similar functionality. You should consider using it instead if you do not have allergic reactions to system libraries. GENESIS
Written by David Muir Sharnoff <muir@idiom.org>. The starting point for this package was a posting by Paul Foley <paul@ascent.com> LICENSE
Copyright (C) 1996-2010 David Muir Sharnoff. Copyright (C) 2011 Google, Inc. License hereby granted for anyone to use, modify or redistribute this module at their own risk. Please feed useful changes back to cpan@dave.sharnoff.org. perl v5.12.3 2011-05-12 Time::CTime(3pm)
All times are GMT -4. The time now is 09:15 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy