os version 0.0.5

source/os/debug/include/list.h

@@ -20,5 +20,6 @@ struct list {
 
 int list_init(struct list *head);
 int list_add(struct list *head, struct list_node *node);
+int list_get_len(struct list *head);
 
 #endif /* SOURCE_FIRMWARE_KERNEL_LIST_H_ */

source/os/debug/include/shell.h

@@ -12,6 +12,7 @@ typedef void *(*command_callback)(const char*);
 
 struct command {
 	const char *command;
+	const char *description;
 	const command_callback command_callback;
 	struct list_node item;
 };