grantseltzer

package main

import (
	"fmt"
	"log"
	"os"
	"os/signal"

	"github.com/iovisor/gobpf/bcc"
)

siscia

User authentication system

Your task is now to create a user authentication system.

This document will guide you through all the features and implication of such system, so that you don't have to search them yourself.

We will focus on web/browser-technologies, however similar concept can be widely applied. This guide, is a work in progress, feel free to comment and provide feedbacks.

Expected Workflows

jgrahamc

addEventListener('fetch', event => {
  event.respondWith(fetchAndCheckPassword(event.request))
})

async function fetchAndCheckPassword(req) {
  if (req.method == "POST") {
    try {
      const post = await req.formData();
      const pwd = post.get('password')
      const enc = new TextEncoder("utf-8").encode(pwd)

manashmandal

This is a note on how to cross compile opencv for pretty much any ARM device(HardFP supported in this case) and deploy. Native
compiling in ARM devices can be painfully slow and they seem to hang often during build(mine got stuck at 43%). So if you happen
to have a desktop/laptop/server running ubuntu or similar linux distro, u can build opencv in fractionth of the time taken for 
native compiling without any issues.
Building opencv3 with TBB and NEON and VFP support can boost opencv performance. Thanks to Adrian at pyimagesearch for pointing that out.
Both my PC and target machine aka orange pi zero are running ubuntu 16.04 with python2.7 and python 3.5.

1.Run the following commands in both machines to install the necessary libraries etc.(mine worked with them,so they should be enough 
hopefully)
sudo apt-get update && sudo apt-get upgrade

justincormack

I have run an nginx container...

docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
6d67de07731d        nginx               "nginx -g 'daemon ..."   40 minutes ago      Up 40 minutes       80/tcp, 443/tcp     epic_goldberg

I want to use Debian for debug:
docker run -it --pid=container:6d67de07731d --net=container:6d67de07731d --cap-add sys_admin debian

I can see the nginx process:

mhausenblas

Cheat sheet: container images

A collection of container images I use for admin tasks or troubleshooting in environments such as CoreOS where quite often the one or other thing is not available or I can't be bothered to install stuff.

Networking

Good old netcat:

$ docker run -it --rm appropriate/nc $IP $PORT

kwilczynski

#!/bin/bash

set -u
set -e

set -o pipefail

export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

cat <<'EOF' > /etc/modprobe.d/blacklist-ipv6.conf

kennwhite

Most VPN Services are Terrible

Short version: I strongly do not recommend using any of these providers. You are, of course, free to use whatever you like. My TL;DR advice: Roll your own and use Algo or Streisand. For messaging & voice, use Signal. For increased anonymity, use Tor for desktop (though recognize that doing so may actually put you at greater risk), and Onion Browser for mobile.

This mini-rant came on the heels of an interesting twitter discussion: https://twitter.com/kennwhite/status/591074055018582016

DiKorsch

#include "rotation.hpp"

using namespace cv;
using namespace std;

void rotate(const Mat src, Mat &dest, double angle, int borderMode, const Scalar &borderValue){

    int w = src.size().width, h = src.size().height;

    Size2d new_size = Size2d(abs(w * COS((int)angle % 180)) + abs(h * SIN((int)angle % 180)), abs(w * SIN((int)angle % 180)) + abs(h * COS((int)angle % 180)));

colindean

#!/bin/sh
OPTIONS=`vagrant ssh-config | awk -v ORS=' ' '{print "-o " $1 "=" $2}'`

scp ${OPTIONS} "$@" || echo "Transfer failed. Did you use 'default:' as the target?"