#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2007-2022  IPFire Team  <info@ipfire.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 3 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 <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################
#
# This script checks if a daylight saving time transition
# has just happened and will run the given command.

HOUR_NOW=$(date "+%H")
HOUR_THEN=$(date --date="1 hour ago" "+%H")

# We expect that the result in HOUR_THEN is HOUR_NOW - 1
HOUR_EXPECTED=$(( ${HOUR_NOW} - 1 ))

if [ "${HOUR_EXPECTED}" -eq "${HOUR_THEN}" ]; then
	exit 0
fi

$@
