In a get_sct() function, it have some lines: pt = (char *) memmem(p+7, SCLEN-(p-code)-7, "\xc7\x44\x24\x18\xda\xff\xff\xff\xe8", 9); if (!pt) return 0; when run here, it always return 0, so I want to know what means the "\xc7\x44\x24\x18\xda\xff\xff\xff\xe8" ? Thanks - : send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html