print usage when less than two arguments are provided

icp

@@ -50,6 +50,12 @@ do
   fi
 done
 
+# Check if we got any actual arguments
+if [[ ${#rsync_arg[@]} -lt 2 ]];then
+  usage
+  exit $EXIT_INVALID_PATH
+fi
+    
 # If last argument (target) is a directory
 # add a trailing slash
 if [[ -d "${rsync_arg[-1]}" ]];then