utils: T5239: add low-level read from config.boot

(cherry picked from commit 56d3f75de487c1dcfd075cf7b65cb16b6501d0ca)

1 files changed, 30 insertions, 0 deletions

diff --git a/src/helpers/read-saved-value.py b/src/helpers/read-saved-value.py
new file mode 100755
index 000000000..1463e9ffe
--- /dev/null
+++ b/src/helpers/read-saved-value.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2023 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# 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/>.
+#
+#
+
+from argparse import ArgumentParser
+from vyos.utils.config import read_saved_value
+
+if __name__ == '__main__':
+    parser = ArgumentParser()
+    parser.add_argument('--path', nargs='*')
+    args = parser.parse_args()
+
+    out = read_saved_value(args.path) if args.path else ''
+    if isinstance(out, list):
+        out = ' '.join(out)
+    print(out)