11-17-2010
This is possibly the most obfuscaded code I have ever seen.
I think this needs a "sed" expert (not me).
As far as I can see the script is creating a cpio archive of a file to a pipeline, displaying the archive in formatted hexadecimal (the "od -x") then fishing the formatted file modifiction date out of the archive and then converting that date from hexadecimal to decimal. I could be wrong.
On my system the cpio header structure is described in "man 4 cpio".
The approach is interesting but a "tar" archive format might have been easier to work with.
There are much better methods depending on what Operating System you have.
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LEARN ABOUT DEBIAN
datetime::format::epoch::dotnet
DateTime::Format::Epoch::DotNet(3pm) User Contributed Perl Documentation DateTime::Format::Epoch::DotNet(3pm)
NAME
DateTime::Format::Epoch::DotNet - Convert DateTimes to/from .NET epoch seconds
SYNOPSIS
use DateTime::Format::Epoch::DotNet;
my $dt = DateTime::Format::Epoch::DotNet->parse_datetime( 1051488000 );
DateTime::Format::Epoch::DotNet->format_datetime($dt);
# 1051488000
my $formatter = DateTime::Format::Epoch::DotNet->new();
my $dt2 = $formatter->parse_datetime( 1051488000 );
$formatter->format_datetime($dt2);
DESCRIPTION
This module can convert a DateTime object (or any object that can be converted to a DateTime object) to the number of seconds since the
epoch defined in the .NET Framework SDK.
Note that this epoch is defined in the local time zone. This means that these two pieces of code will print the same number of seconds,
even though they represent two datetimes 6 hours apart:
$dt = DateTime->new( year => 2003, month => 5, day => 2,
time_zone => 'Europe/Amsterdam' );
print $formatter->format_datetime($dt);
$dt = DateTime->new( year => 2003, month => 5, day => 2,
time_zone => 'America/Chicago' );
print $formatter->format_datetime($dt);
METHODS
Most of the methods are the same as those in DateTime::Format::Epoch. The only difference is the constructor.
o new()
Constructor of the formatter/parser object. It has no parameters.
SUPPORT
Support for this module is provided via the datetime@perl.org email list. See http://lists.perl.org/ for more details.
AUTHOR
Eugene van der Pijll <pijll@gmx.net>
COPYRIGHT
Copyright (c) 2003 Eugene van der Pijll. All rights reserved. This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
SEE ALSO
DateTime
datetime@perl.org mailing list
perl v5.10.1 2007-12-03 DateTime::Format::Epoch::DotNet(3pm)