MelvinTo

package main

import (
	"fmt"
	"strconv"
	"time"
)

type Node struct {
	prev, next *Node

MelvinTo

#!/bin/bash

# This script will shrink a given image file to the minimal size to store existing data
# Which is very helpful to reduce the disk space fot the image file
#
# Limitation
#  Only ext4 is supported
#  Only support single partition
#
# melvinto@gmail.com

MelvinTo

#!/bin/bash

# This script is doing exactly the opposite of what shrink_image.sh is,
# which will resize the filesystem to use maximum storage space of
# the given device
#
# This is typically done after dd a shrinked image file to this given device
#

DEVICE_FILE=$1

MelvinTo

cat a.c
/*
 * Linux watchdog demo for LPC313x
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,

MelvinTo

var readline = require('readline');
var rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  terminal: false
});

let hash = {};

rl.on('line', function(line){

MelvinTo

#!/bin/bash

echo "Warning: This script is only tested on ubuntu 18.04 LTS"

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"

# Require sudo privilege to setup and install packages

echo "Turning on BBR..."
sudo bash -c "modprobe tcp_bbr" &>/dev/null

MelvinTo

cd /home/pi
mkdir -p /home/pi/stress_data
truncate -s 1G DISK; mke2fs -q -t ext4 -F DISK
sudo mount DISK /home/pi/stress_data
sudo chmod 777 /home/pi/stress_data
stressdisk -duration 5m -s 100000000 cycle /home/pi/stress_data
awk '/Errors:/ {print $2}' /home/pi/stressdisk.log | tail -1

MelvinTo

Source: https://web.archive.org/web/20141216073338/https://gkbrk.com/blog/read?name=reverse_engineering_the_speedtest_net_protocol Author: Gökberk Yaltıraklı

Reverse Engineering the Speedtest.net Protocol

After finishing my command line speed tester written in Rust, I didn't have a proper blog to document this process. A few days ago I wrapped up a simple blogging script in Python so hopefully it works good enough to explain how everything works.

By now I have already figured out the whole protocol for performing a speed test but I will write all the steps that I took so you can learn how to reverse engineer a simple protocol.

The code that I wrote can be found at https://github.com/gkbrk/speedtest-rust.

MelvinTo

---
- name: Update dat files
  hosts: all
  become: yes

  vars:
    - base_path: /etc/mosdns
    - restart_daemon: yes
    - daemon_service_name: mosdns
    - clean_up_after: yes