10-20-2009
Let's see if I can help you a bit:
- There was, a long time ago, the one original AT&T UNIX. However, it's long been discontinued, with rights going through various hands (see the current Novell vs. SCO squabble). Sometime around the late 1970s, two different systems started to emerge: System V, and the Berkley Standard Distribution. Current Unices are based on those two. For a complete overview, Wikipedia has a pretty good article.
- If by "high-end" you mean "expensive closed-source company produced", you won't be able to buy these alone. Those usually come bundled with hardware, and aren't available without it (AIX, HP-UX, and MacOS X are examples of that).
Deciding on what UNIX to use depends on what you want to do. If you want to develop in a wide range of languages, or using the most current hardware, I'd suggest Linux. If you want a stable system (both in terms of run-time and system behaviour), I'd suggest *BSD or OpenSolaris
- The hardware modern Intel-based Macs use is pretty much completely PC hardware, so it won't make any difference on stability. But I suggest setting up the new system on different hardware, since it won't be as much trouble should you need to re-install.
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LEARN ABOUT DEBIAN
datetime::format::epoch::unix
DateTime::Format::Epoch::Unix(3pm) User Contributed Perl Documentation DateTime::Format::Epoch::Unix(3pm)
NAME
DateTime::Format::Epoch::Unix - Convert DateTimes to/from Unix epoch seconds
SYNOPSIS
use DateTime::Format::Epoch::Unix;
my $dt = DateTime::Format::Epoch::Unix->parse_datetime( 1051488000 );
# 2003-04-28T00:00:00
DateTime::Format::Epoch::Unix->format_datetime($dt);
# 1051488000
my $formatter = DateTime::Format::Epoch::Unix->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
Unix epoch.
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::Unix(3pm)