Add basic ls

src/kernel/kernel.c

@@ -56,7 +56,7 @@ void kernel_main() {
   kernel->stdin = keyboard_init();
   kernel->stdout = vga_init();
 
-  fs_node_t *bin = fs_open_by(kernel->root, "terminal");
+  fs_node_t *bin = path_open_file(kernel->root, kernel->cwd, "bin/terminal");
 
   ASSERT(bin, "kernel: terminal not found");