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@michelem09
michelem09 / get_eth_nodes.sh
Last active June 3, 2020 05:46
Simple bash script to get list of latest 50 active nodes for Ethereum blockchain (ETH mainnet) from https://www.ethernodes.org/network/1/nodes. Useful to have the list ready for Parity bootnodes config option.
#!/bin/bash
### Usage ###
# ./get_eth_nodes.sh <json | strings>
# Use json to get an array of nodes in JSON suitable for Parity
# Use strings to get a list of nodes line by line
#############
ARRAY=()
NODES=`curl -s 'https://www.ethernodes.org/network/1/data?draw=1&columns%5B0%5D%5Bdata%5D=id&columns%5B0%5D%5Bname%5D=&columns%5B0%5D%5Bsearchable%5D=true&columns%5B0%5D%5Borderable%5D=true&columns%5B0%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B0%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B1%5D%5Bdata%5D=host&columns%5B1%5D%5Bname%5D=&columns%5B1%5D%5Bsearchable%5D=true&columns%5B1%5D%5Borderable%5D=true&columns%5B1%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B1%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B2%5D%5Bdata%5D=port&columns%5B2%5D%5Bname%5D=&columns%5B2%5D%5Bsearchable%5D=true&columns%5B2%5D%5Borderable%5D=true&columns%5B2%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B2%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B3%5D%5Bdata%5D=country&columns%5B3%5D%5Bname%5D=&columns%5B3%5D%5Bsearchable%5D=true&columns%5B3%5D%5Borderable%5D=tru
@miguelmota
miguelmota / ethereum_keys.sh
Last active March 12, 2024 11:45
Generate Ethereum Private key, Public key, and Address using Bash and OpenSSL
# Generate the private and public keys
openssl ecparam -name secp256k1 -genkey -noout | openssl ec -text -noout > key
# Extract the public key and remove the EC prefix 0x04
cat key | grep pub -A 5 | tail -n +2 | tr -d '\n[:space:]:' | sed 's/^04//' > pub
# Extract the private key and remove the leading zero byte
cat key | grep priv -A 3 | tail -n +2 | tr -d '\n[:space:]:' | sed 's/^00//' > priv
# Generate the hash and take the address part
@muendelezaji
muendelezaji / bash-to-zsh-hist.py
Created October 5, 2016 14:18 — forked from op/bash-history-to-zsh-history.py
Convert Bash history to Zsh history
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# This is how I used it:
# $ cat ~/.bash_history | python bash-to-zsh-hist.py >> ~/.zsh_history
import sys
import time
@arya-oss
arya-oss / INSTALL.md
Last active November 18, 2023 13:58
Ubuntu 16.04 Developer Tools installation

Ubuntu 16.04 Developer Tools Installation

First things first !

sudo apt update
sudo apt upgrade

Standard Developer Tools

sudo apt-get install build-essential git
@cecilemuller
cecilemuller / letsencrypt_2020.md
Last active April 15, 2024 02:19
How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SSL rating)

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)


Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

@moshest
moshest / appspec.yml
Last active October 13, 2021 18:09
Node.js Project on AWS CodeDeploy CentOS
version: 0.0
os: linux
files:
- source: /
destination: /home/ec2-user/node
permissions:
- object: /home/ec2-user
owner: ec2-user
group: ec2-user
type:
@karlkranich
karlkranich / apitest.php
Last active July 17, 2018 14:49
Updated PHP code to use the Google Sheets API. See usage instructions at http://karl.kranich.org/2015/04/16/google-sheets-api-php/ More examples at https://gist.github.com/karlkranich/afa39e3d778455b38c38
<?php
// apitest.php
// by Karl Kranich - karl.kranich.org
// version 3.1 - edited query section
require_once realpath(dirname(__FILE__) . '/vendor/autoload.php');
include_once "google-api-php-client/examples/templates/base.php";
$client = new Google_Client();
@nicwolff
nicwolff / XML_breaker.py
Last active March 14, 2024 02:11
Python script to break large XML files
import os
import sys
from xml.sax import parse
from xml.sax.saxutils import XMLGenerator
class CycleFile(object):
def __init__(self, filename):
self.basename, self.ext = os.path.splitext(filename)
self.index = 0
@robinbb
robinbb / form-url-decode.js
Last active October 18, 2022 09:10
Decode "application/x-www-form-urlencoded" (HTTP POST) Components In JavaScript
/* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
@jnx
jnx / rbenv-install-system-wide.sh
Created October 1, 2011 20:09
rbenv install and system wide install on Ubuntu 10.04 LTS.
# Update, upgrade and install development tools:
apt-get update
apt-get -y upgrade
apt-get -y install build-essential
apt-get -y install git-core
# Install rbenv
git clone git://github.com/sstephenson/rbenv.git /usr/local/rbenv
# Add rbenv to the path: