simcap

sudo vim /etc/systemd/journald.conf
less /var/log/syslog

sudo vim /etc/rsyslog.conf 

sudo systemctl status rsyslog

- Syslog conf on sender side:
# Provides TCP forwarding. But the current server runs on UDP
*.* @@10.0.0.51:514

simcap

#!/bin/sh
if [ -z $1 ]; then
  echo "Usage: first argument is the machine alias on which you want to deploy"
  exit 1
fi

HOST_ALIAS=$1
PROJECT_NAME=${PWD##*/}  # basename of current dir

if ! [ -z $2 ]; then

simcap

package main

import (
	"bufio"
	"encoding/json"
	"fmt"
	"net/url"
	"net/http"
	"os"
	"time"

simcap

# https://godoc.org/github.com/Shopify/sarama
# https://github.com/spotify/docker-kafka

wget http://apache.websitebeheerjd.nl/kafka/0.8.2.1/kafka_2.11-0.8.2.1.tgz
tar xvzf kafka_2.11-0.8.2.1.tgz
cd kafka_2.11-0.8.2.1

# With docker installed
docker run -p 2181:2181 -p 9092:9092 --env ADVERTISED_HOST=`boot2docker ip` --env ADVERTISED_PORT=9092 spotify/kafka

simcap

"use strict";

var ECKey = require('eckey')
var fs = require('fs')

var seed = process.argv[2] 

var bytes = new Uint8Array(32);

for (var i = 0; i < seed.length; i += 2) {

simcap

package main

import (
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/x509"
	"flag"
	"fmt"
	"io/ioutil"

simcap

#!/usr/bin/ruby
# Run with 
# $ ruby -r minitest/autorun $PROGRAM_NAME
#
# Returns the correct version among multiple given 
# hashes. In other words, which hash is the one 
# that most ressemble the other hashes ?
# 
# First a Hash has to be able to say 
# how similar it is to another one

simcap

# Defining a fast immutable struct while
# keeping Struct value object behaviour

class ImmutableStruct < Struct
  undef []=, send

  def self.inherited(subclass)
    subclass.instance_methods.grep(/\w=/) do |setter|
      undef_method setter
    end

simcap

# A good intermediary for internal-only access of instance variables
# Here the example is with the access on the 'sauce' instance variable

class Salad

  def initialize(sauce)
    @sauce = sauce
  end
  
  attr_reader :sauce

simcap

Customer = Struct.new(:name, :address)

c = Customer.new('john')  # Do not validate construction
c.name                    # => 'john'
c.address                 # => nil

c['name']                 # => 'john'
                          # Extra unneeded API to access your property

c['name'] = 'robert'