bajcmartinez

def mine(self, reward_address):
    """
    Mines a new block into the chain

    :param reward_address: <str> address where the reward coin will be transferred to
    :return: result of the mining attempt and the new block
    """
    last_block = self.last_block
    index = last_block.index + 1
    previous_hash = last_block.hash

pm-hwks

## Netcat server command 
nc -l <unused port # > /dev/null
eg:
  nc -l 1122 > /dev/null

## Netcat Client command 
dd if=/dev/zero bs=9100004096 count=1 | nc <netcat server> <netcat port>
eg:
  dd if=/dev/zero bs=9100004096 count=1 | nc 10.0.1.251 1122

msreekm

# ---- Base Node ----
FROM mhart/alpine-node:10 AS base
# install node
RUN apk add --no-cache nodejs-current
# set working directory
WORKDIR /root/nextApp
# copy project file
COPY package.json  .
COPY tsconfig.server.json  .
COPY .npmrc .

mbaitelman

Automated Terraform Deployments

Requirements

• AWS Account
• AWS API User API Key/Secret
• Bitbucket Account

Setup

1. Create or update an existing Bitbucket repo
2. Open https://bitbucket.org/USERNAME/REPO/addon/pipelines/deployments

antonfisher

Add --allow-privileged=true to:

# kubelet config
sudo vim /var/snap/microk8s/current/args/kubelet

#kube-apiserver config
sudo vim /var/snap/microk8s/current/args/kube-apiserver

Restart services:

nbigot

# Ansible playbook AWS - install docker
---
- name: "AWS - Install docker"
  hosts: aws-docker-vms
  become: yes
  tasks:
    - name: Update all packages
      yum:
        name: '*'
        state: latest

cecilemuller

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

jkcdarunday

skeithc@freedom ~ % ethminer --help                                 
Usage ethminer [OPTIONS]
Options:

Work farming mode:
    -F,--farm <url>  Put into mining farm mode with the work server at URL (default: http://127.0.0.1:8545)
    -FF,-FO, --farm-failover, --stratum-failover <url> Failover getwork/stratum URL (default: disabled)
        --farm-retries <n> Number of retries until switch to failover (default: 3)
        -S, --stratum <host:port>  Put into stratum mode with the stratum server at host:port
        -SF, --stratum-failover <host:port>  Failover stratum server at host:port

gunnarx

Docker image to Virtualbox disk

https://stackoverflow.com/questions/23436613/how-can-i-convert-a-docker-image-into-a-vagrant-virtualbox-box by user blueskin (CC by-sa 3.0)

---

Find the size of the docker image from docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

Qix-

#!/usr/bin/env bash

# Released into the Public Domain.
#
# Original implementation in C by Brad Conte (brad@bradconte.com) <https://github.com/B-Con/crypto-algorithms>
# Ported to Bash (lol) by Josh Junon (josh@junon.me) <https://github.com/qix->
#
# Yes, it's absolutely as slow as it looks.
#
# The only external dependency it has is on a utility called `od`,