introducing moxanix script for controling servers

moxanix.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# Main script for controlling servers.
+
+
+usage ()
+{
+echo "Usage: ./$(basename $0) COMMAND ID"
+echo "	COMMAND: start, stop"
+echo "	ID: 1-7"
+}
+
+##########
+
+# check parameter count
+if [ $# != 2 ]; then
+	usage
+	exit
+fi
+
+# grab parameters
+COMMAND=$1
+ID=$2
+
+# set variables
+TCP_PORT=$((4000 + $ID))
+TTY_PATH="/dev/ttyS$ID"
+
+LOGDIR="./logs"
+LOGFILE="$LOGDIR/moxerver$ID.log"
+
+# execute commands
+if [ "$COMMAND" = "start" ]; then
+	# create log directory if it doesn't exist
+	if [ ! -d $LOGDIR ]; then
+		mkdir -p $LOGDIR
+	fi
+	# start moxerver, redirect stdout and stderr to logfile
+	# nohup keeps it running when the script ends
+	nohup ./moxerver -p $TCP_PORT -t $TTY_PATH > $LOGFILE 2>&1 &
+	
+elif [ "$COMMAND" = "stop" ]; then
+	# ps axf 				-> list all processes with PID as first field
+	# grep [m]oxerver...	-> [] trick eliminates the actual grep process from results
+	# awk '{print $1}' 		-> print the first field from the line, in this case PID
+	pid=$(ps axf | grep "[m]oxerver -p $TCP_PORT" | awk '{print $1}')
+	if [ $pid = "" ]; then
+		echo "nothing to kill"
+	fi
+	kill -s SIGTERM $pid
+	
+else
+	# unsupported command
+	usage
+fi