diff --git a/default.inc b/default.inc
index 5e2a496..7765368 100755
--- a/default.inc
+++ b/default.inc
@@ -36,6 +36,19 @@ is_array()
     return 1
 }
 
+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
 abet[0]="a"