--- /dev/null
+#!/bin/bash
+############################################################################
+# #
+# This file is part of the IPFire Firewall. #
+# #
+# IPFire 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. #
+# #
+# IPFire 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 IPFire; if not, write to the Free Software #
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
+# #
+# Copyright (C) 2014 IPFire Team <info@ipfire.org> #
+# #
+############################################################################
+
+# 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 "${HOUR_THEN}" ]; then
+ exit 0
+fi
+
+$@