+#define execl real_execl
+#define execlp real_execlp
+#define execle real_execle
+#define execv real_execv
+#define execvp real_execvp
+#define execve real_execve
+#define chdir real_chdir
+#define sleep real_sleep
+#define usleep real_usleep
+#define exit real_exit