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#!/usr/bin/perl
#
# Copyright © 2023 Guillem Jover <guillem@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
use strict;
use warnings;
use Time::Piece;
use Time::Seconds;
# https://ftp-master.debian.org/dinstall.html
my $start = '01:52';
my $every = 6 * ONE_HOUR;
my $now = localtime;
my $t = $now->truncate(to => 'day') +
$now->tzoffset +
Time::Piece->strptime($start, '%H:%M')->epoch;
my $iter = 0;
while (1) {
my $it = $t + ($iter++ * $every);
my $delta = $it - $now->epoch;
if ($delta->epoch > 0) {
print "\n";
printf "Next Debian dinstall run is at: %s\n", $it->cdate;
exit 0;
}
}
1;
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