jeffrade

#!/bin/bash
# Usage: Launch in the background and pass RECORD_SET_NAME (e.g. sub.example.com.) 
# as a first argument for the Route53 record. Log file can be found at /var/tmp/r53-record.log

NOTIFY_DIR=/var/tmp
LOG_FILE=${NOTIFY_DIR}/r53-record.log
CURR_IP_FILE=${NOTIFY_DIR}/ip.out
TMP_IP_FILE=${NOTIFY_DIR}/ip.tmp
IP_LKP_URL=https://ifconfig.me/ip
RECORD_SET_FILE=${NOTIFY_DIR}/r53-record-set.json

jeffrade

#!/bin/bash

echo "Starting..."

cd ~/
wget https://download.java.net/java/GA/jdk12.0.1/69cfe15208a647278a19ef0990eea691/12/GPL/openjdk-12.0.1_linux-x64_bin.tar.gz
tar -xzvf openjdk-12.0.1_linux-x64_bin.tar.gz 
echo "PATH=$PATH:$HOME/jdk-12.0.1/bin" >> ~/.bash_profile
echo "export PATH" >> ~/.bash_profile
echo "export JAVA_HOME=$HOME/jdk-12.0.1" >> ~/.bash_profile

jeffrade

#!/bin/bash

# Just a simple wrapper to start bitcoind.
#
# If using systemd, simply create a file (e.g. /etc/systemd/system/bitcoind.service) 
# from example file below and add this script in ExecStart.
# https://raw.githubusercontent.com-/bitcoin/bitcoin/76deb30550b2492f9c8d9f0302da32025166e0c5/contrib/init/bitcoind.service
#
# Then run following to always start:
# systemctl enable bitcoind

jeffrade

Addtional Setup and Installation Notes for Running a Full Node (Linux)

• Install fail2ban
• (Optional) Block data is getting larger (although at a slower pace), so you might be mounting an external drive to .bitcoin dir. If so follow these steps:

   # You want this to auto mount on reboot (or else you'll have to manually mount every time):
 - `sudo blkid` # Make note of the UUID of your drive
 - `sudo vim /etc/fstab` # Append additional entry and your mount directory (easy to default to `$HOME/.bitcoin`)
    e.g. `UUID=<hexadecimal-dashed-uuid> /home/<your-user-name>/.bitcoin/ ext4 defaults 0 0` 
 - `sudo mount -a` # Test this, you'll get errors if any

jeffrade

#!/bin/sh -x

echo "Starting..."

apt-get install -y fail2ban

systemctl start fail2ban
systemctl enable fail2ban

> /etc/fail2ban/jail.local

jeffrade

defmodule ListFun do

	def double_every_other([], acc), do: acc

	def double_every_other([head | nil], acc) do
		new_acc = [head * 2 | acc]
		double_every_other([], new_acc)
	end

	def double_every_other([head | tail], acc) when length(tail) == 0 do

jeffrade

defmodule Recursion do
        @moduledoc """
        Showing how tail recursion is optimized way to do recursion (i.e. no memory loss since function calls not kept on stack).
        """

        def correct_tail_recursion_adding([head | tail], accumalator) do
                correct_tail_recursion_adding(tail, accumalator + head)
        end

        def correct_tail_recursion_adding([], accumulator) do

jeffrade

#!/bin/bash

echo "Starting..."

param=`sed -e 1$'{w/dev/stdout\n;d}' -i~ params.out`

while [[ -n $param ]]; do
	echo "Starting process for $param..."
	<some-command> $param &
	curr_pid=`echo $!`

jeffrade

#!/bin/bash

QUEUE_DIR="./queue"
COMPLETED_DIR="./completed"
S3_BUCKET_NAME="<YOUR_BUCKET_NAME_HERE>"
OLDEST_FILENAME=""

echo "Running..."
while :; do
	echo "Finding oldest file..."

jeffrade

#!/bin/sh

if [ -z "$1" ]
	then
		echo "Please supply a domain, e.g. www.example.com"
		exit 1
fi
echo | openssl s_client -servername $1 -connect $1:443 2>/dev/null | openssl x509 -text

echo "Saving public ./cert.pem..."