new
diff --git a/src/libndb/ndbcat.c b/src/libndb/ndbcat.c
new file mode 100644
index 0000000..61ef5e4
--- /dev/null
+++ b/src/libndb/ndbcat.c
@@ -0,0 +1,18 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <ctype.h>
+#include <ndb.h>
+
+Ndb*
+ndbcat(Ndb *a, Ndb *b)
+{
+	Ndb *db = a;
+
+	if(a == nil)
+		return b;
+	while(a->next != nil)
+		a = a->next;
+	a->next = b;
+	return db;
+}