Waitpid seems to be working

src/test/init.c

@@ -32,6 +32,11 @@ int main() {
         close(test123);
         printf("\n %s \n", buf);
     }
+    while (1) {
+        execve("hello2", 0, 0);
+        print_mem();
+        sleep(500);
+    }
 
     while (1) {
         printf("\n> ");