-# Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
-# Copyright (C) 2015 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
-#
-# 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/>.
+# SPDX-FileCopyrightText: 2015 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
+# SPDX-FileCopyrightText: 2023 Michael Jeanson <mjeanson@efficios.com>
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+set -exu