--- /dev/null
+# node_step.sh -- Script to send signal to control Mesh Node Simulation
+# Copyright (C) 2018 Guus Sliepen <guus@meshlink.io>
+#
+# 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 2 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# Read command-line arguments
+prog_name=$1
+signal=$2
+
+# Find instance of running program and send the named signal to it
+pid=`/bin/pidof -s ${prog_name}`
+kill -${signal} ${pid}
+exit $?