diff --git a/include/ucore/cmd/cmd.h b/include/ucore/cmd/cmd.h
new file mode 100644
index 0000000..8c9880a
--- /dev/null
+++ b/include/ucore/cmd/cmd.h
@@ -0,0 +1,48 @@
+#ifndef UC_CMD_H_
+#define UC_CMD_H_
+
+#include <stdint.h>
+
+enum UCCmdResult {
+    UC_CMDRES_OK,
+    UC_CMDRES_WARN,
+    UC_CMDRES_ERR
+};
+
+struct UCCmdDef;
+struct UCVTerm;
+typedef enum UCCmdResult (*uc_cmd_handler)(struct UCCmd *cmd, struct UCVTerm *term, int arg, char *argv[]);
+
+struct UCCmdDef {
+    uint32_t cmd_id;
+    uint32_t cmd_flags;
+    const char *cmd_syntax;
+    const char *cmd_desc;
+    uc_cmd_handler cmd_cb;
+};
+
+
+#define UC_DEF_CMD_DEF(id, flags, syntax, desc)\
+static const struct UCCmdDef uc_cmd_def ## cmd_id {\
+    .cmd_id     = cmd_id,\
+    .cmd_flags  = flags,\
+    .cmd_syntax = syntax,\
+    .cmd_desc   = desc,\
+};
+
+#define UC_DEF_CMD_FUNC(id)\
+static enum  UCCmdResult uc_cmd_func_ ## id (struct UCCmd *cmd, struct UCVTerm *term, int nargs, char *args[])
+
+#define UC_DEF_CMD(id, flags, syntax, desc)\
+    UC_DEF_CMD_DEF(id, flags, syntax, desc)\
+    UC_DEF_CMD_FUNC(id)
+
+UC_DEF_CMD(111, 0 , 
+"show peers", 
+"Show all connected peers")
+{
+
+}
+
+#endif
+/
diff --git a/src/cmd/cmd.c b/src/cmd/cmd.c
new file mode 100644
index 0000000..3bf0cf4
--- /dev/null
+++ b/src/cmd/cmd.c
@@ -0,0 +1,17 @@
+#include <stdint.h>
+
+enum UCCmdNodeType {
+    UC_CMDNODE_ROOT,
+    UC_CMDNODE_KEYWORD,
+    UC_CMD-zzzzzzzzzzzzzzzz
+
+};
+
+
+struct UCCmdNode {
+    enum UCCmdNodeType type;
+    uint32_t flags;
+    void *param;
+    struct UCCmdNode *next;
+    struct UCCmdNode *child;
+};