Add wrapper script for daemonize

daemonize.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+NAME="ifconfig"
+IFC_PATH=$(dirname $(readlink -f $0))
+LOCK_FILE="$IFC_PATH/$NAME.lock"
+PID_FILE="$IFC_PATH/$NAME.pid"
+BIN="$IFC_PATH/$NAME"
+
+E_USAGE=1
+E_NOTFOUND=2
+E_NOPID=3
+E_LOCKED=4
+
+if [[ ! -x "$BIN" ]]; then
+    echo "$BIN does not exist or is not executable"
+    exit $E_NOTFOUND
+fi
+
+case "$1" in
+    start)
+        if [[ -f "$LOCK_FILE" ]]; then
+            echo "Lock file $LOCK_FILE exists. Already running?"
+            exit $E_LOCKED
+        fi
+        echo "Starting $NAME"
+        daemonize -c $IFC_PATH -o ${NAME}.log -p $PID_FILE -l $LOCK_FILE $BIN
+        ;;
+    stop)
+        if [[ ! -s "$PID_FILE" ]]; then
+            echo "PID file $PID_FILE empty or not found. Not started?"
+            exit $E_NOPID
+        fi
+        PID=$(head -n1 $PID_FILE)
+        echo "Stopping $NAME: $PID"
+        kill $PID && rm -- $PID_FILE $LOCK_FILE
+        ;;
+    status)
+        if [[ ! -s "$PID_FILE" ]]; then
+            echo "$NAME is not running"
+        else
+            echo "$NAME is running: $(head -n1 $PID_FILE)"
+        fi
+        ;;
+    *)
+        echo "usage: $0 {start|stop|status}"
+        exit $E_USAGE
+        ;;
+esac