Auronmatrix

# Sources:
# https://aws.amazon.com/premiumsupport/knowledge-center/vpc-find-owner-unknown-ip-addresses/
# https://github.com/aws/aws-cli/issues/1777

for region in $(aws ec2 describe-regions --all-regions --query "Regions[*].RegionName" --output text --profile=<PROFILE>)
do
     echo -e "\nLookup IP in region:'$region'..."
     aws ec2 describe-network-interfaces --filters Name=association.public-ip,Values=<PUBLIC_IP> --profile=<PROFILE> --region=$region
done

Auronmatrix

// For those that are annoyed that the AWS Step function history UI doesn't support filter
// Just paste this into your browser console and grab a coffee
if (!window.btn) { window.btn = document.getElementsByClassName('sfn-history-load-more-container')[0].children[0].children[0] }; var failed = Array.from(document.querySelectorAll('span')).find(el => el.textContent === 'TaskFailed'); var clickAndFind = () => { window.btn.click(); window.btn.scrollIntoView(); var failed = Array.from(document.querySelectorAll('span')).find(el => el.textContent === 'TaskFailed'); if (failed) { console.log("found failed"); failed.scrollIntoView(); document.getElementsByClassName("awsui-app-layout__content")[0].style.backgroundColor = "tomato" } else { console.log("no failed found. Trying again later"); window.setTimeout(clickAndFind, 800) }}; clickAndFind();

Auronmatrix

#!/bin/bash


echo "---------Existing Tags---------"
git show-ref --tags -d
echo "-------------------------------"

function increase_version() {
    python - "$1" "$2" <<EOF
import sys

Auronmatrix

#!/bin/bash

LOOK_FOR='.git'
find . -name $LOOK_FOR -print0 | xargs -0 -n1 dirname | sort --unique | while read fname; do
    (
        cd $fname
        echo $(git rev-parse --abbrev-ref HEAD) " | " $fname 
    )
done

Auronmatrix

#!/bin/bash

LOOK_FOR='.git'
find . -name $LOOK_FOR -print0 | xargs -0 -n1 dirname | sort --unique | while read fname; do
    (
        cd $fname
        git pull
    )
done

Auronmatrix

Articles:

Steps taken from following guides:

• digitalocean
• tecmint
• install-docker

Download ISO

Auronmatrix

#!/bin/bash
# Update all git directories below current directory or specified directory
# Skips directories that contain a file called .ignore

function update {
  local d="$1"
  if [ -d "$d" ]; then
    if [ -e "$d/.ignore" ]; then 
      echo "Ignoring $d"
    else

Auronmatrix

DASH Difficulty Drop Post Mortem & Potential Network Segmentation

Issue

Around 17.06.2019 our DASH node started showing some strange behaviour. When requesting blocks from the node, their reported difficulty was around ~50x lower than the actual network.

Average Daily Dash Difficulty

|Date | Difficulty|

Auronmatrix

# Must be run as sudo
# Install Java 1.8

## Download Java tar and extract
cd /opt/
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "https://download.oracle.com/otn-pub/java/jdk/8u201-b09/42970487e3af4f5aa5bca3f542482c60/jdk-8u201-linux-x64.tar.gz"
tar xzf jdk-8u201-linux-x64.tar.gz

## Configure alternatives
cd jdk1.8.0_201/

Auronmatrix

openssl x509 -enddate -noout -in certificate.pem