Mac OS X v10.5, Mac OS X v10.6: When to use Time Machine or Backup to back up data
If you have Mac OS X v10.5 Leopard or Mac OS X v10.6 Snow Leopard and are a MobileMe subscriber, you may be wondering when to use the Backup application or Time Machine to back up your important files and data. The answer depends on which files you will be backing up and where they will be backed up. Note: You should not back up any data outside of your Home folder with Backup (see this article for more information). Time Machine can easily back up files outside of your Home folder.
Epoch(3) User Contributed Perl Documentation Epoch(3)NAME
Time::Epoch - Convert between Perl epoch and other epochs
SYNOPSIS
#!/usr/bin/perl -wl
use Time::Epoch;
my $perlsec = 966770660; # Sun Aug 20 07:24:21 2000 -0400 on Mac OS
my $epochsec = perl2epoch($perlsec, 'macos', '-0400');
my $perlsec2 = epoch2perl($epochsec, 'macos', '-0400');
print $perlsec;
print $perlsec2;
print $epochsec;
# correct time on Unix:
print scalar localtime $perlsec;
# correct time on Mac OS (-0400):
print scalar localtime $epochsec;
DESCRIPTION
Exports two functions, "perl2epoch" and "epoch2perl". Currently only goes between Perl (Unix) epoch and Mac OS epoch. This is in
preparation for an eventual move of Perl to its own universal epoch, so we can get the system epoch of any platform that differs from
Perl's.
Epochs
o macos
Takes additional optional parameter of time zone differential. If time zone differential not supplied, we guess by getting the
different between "localtime" and "gmtime" with <Time::Local::timelocal>.
BUGS
o Hm. With the above test, "scalar localtime $perlsec" under my Linux box and "scalar localtime $epochsec" under my Mac OS box are off
by one second from each other. Maybe a leap second thing? Odd.
AUTHOR
Chris Nandor <pudge@pobox.com>, http://pudge.net/
Copyright (c) 2000-2003 Chris Nandor. All rights reserved. This program is free software; you can redistribute it and/or modify it under
the terms of the Artistic License, distributed with Perl.
SEE ALSO perl(1), perlport(1), Time::Local.
perl v5.16.2 2003-05-21 Epoch(3)
