Fix up some bugs and split out common daemon functions

daemon-common/daemon_lib/common.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+# common.py - PVC daemon function library, common fuctions
+# Part of the Parallel Virtual Cluster (PVC) system
+#
+#    Copyright (C) 2018  Joshua M. Boniface <joshua@boniface.me>
+#
+#    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 <https://www.gnu.org/licenses/>.
+#
+###############################################################################
+
+import subprocess
+
+def run_os_command(command_string):
+    command = command_string.split() 
+    command_output = subprocess.run(
+        command,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE
+    )
+    return command_output.returncode