Update default.inc

default.inc

@@ -170,6 +170,19 @@ service_exists() {
         return 1
     fi
 }
+
+CHECK_HOST(){
+	if [ ! -z ${1+x} ]; then
+		ping -c 6 ${1} > /dev/null 2>&1
+		if [ $? -ne 0 ]; then
+			echo false
+		else
+			echo true
+		fi
+	else
+		echo false
+	fi
+}
 	
 
 declare -A abet