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Top Forums Shell Programming and Scripting Need Help on date subtraction Post 302731867 by meetsriharsha on Friday 16th of November 2012 01:31:59 AM
Old 11-16-2012
Need Help on date subtraction

I have dates as follows in a file

Code:
20121029135649
20121029135721
20121030091540
20121030093420
20121030094340
20121030095427
20121030095856
20121030100104
20121030100251

All these dates are in sorted order. I need to find out the difference between the dates as follows

2nd row date - 1st row date
3rd row date - 2nd row date
4th row date - 3rd row date

For eg:

Code:
20121029135649  20121029135721     difference in minutes
20121029135721  20121030091540     difference in minutes
20121030091540  20121030093420     difference in minutes
20121030093420  20121030094340     difference in minutes

I have tried using date -d "" +%s, but didn't find a correct solution.
I am using HP-UX OS. Please give me a solution.

Last edited by Scrutinizer; 11-16-2012 at 04:02 AM..
 

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CGI::Untaint::date(3pm) 				User Contributed Perl Documentation				   CGI::Untaint::date(3pm)

NAME
CGI::Untaint::date - validate a date SYNOPSIS
use CGI::Untaint; my $handler = CGI::Untaint->new($q->Vars); my $date = $handler->extract(-as_date => 'date'); DESCRIPTION
is_valid This Input Handler verifies that it is dealing with a reasonable date. Reasonably means anything that Date::Manip thinks is sensible, so you could use any of (for example): "December 12, 2001" "12th December, 2001" "2001-12-12" "next Tuesday" "third Wednesday in March" See Date::Manip for much more information on what date formats are acceptable. The resulting date will be a Date::Simple object. Date::Simple for more information on this. date_format By default ambiguous dates of the format 08/09/2001 will be treated as UK style (i.e. 8th September rather than 9th August) If you want to change this, subclass it and override date_format() WARNING
Date::Manip does not play nicely with taint mode. In order to work around this we locally clobber Date::Manip's 'timezone' code. As we're only interested in dates rather than times, this shouldn't be much of an issue. If it is, then please let me know! SEE ALSO
Date::Simple. Date::Manip. AUTHOR
Tony Bowden BUGS and QUERIES Please direct all correspondence regarding this module to: bug-CGI-Untaint-date@rt.cpan.org COPYRIGHT and LICENSE Copyright (C) 2001-2005 Tony Bowden. All rights reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.0 2008-05-12 CGI::Untaint::date(3pm)
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