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cmd_len = read(fd, buf, BUF_LEN - 1); printf("recv report:"); for (i = 0; i < cmd_len; i++) @@ -419,6 +420,7 @@ Sample code:: if (FD_ISSET(STDIN_FILENO, &rfds)) { memset(report, 0x0, sizeof(report)); + bzero(buf, SIZE); cmd_len = read(STDIN_FILENO, buf, BUF_LEN - 1); if (cmd_len == 0)