johnrlive

# Rails production setup via SQLite3 made durable by https://litestream.io/ 
# Copy this to Dockerfile on a fresh rails app. Deploy to fly.io or any other container engine. 
#
#  try locally: docker build . -t rails && docker run -p3000:3000 -it rails
#
#  in production you might want to map /data to somewhere on the host, 
#  but you don't have to!
# 
FROM ruby:3.0.2

johnrlive

FROM phusion/passenger-full:1.0.12

# Set correct environment variables.
ENV HOME /root

# Use baseimage-docker's init process.
CMD ["/sbin/my_init"]

# ...put your own build instructions here...

johnrlive

<?php

define('DB_HOST', 'localhost');
define('DB_NAME', 'name');
define('DB_USER', 'user');
define('DB_PASSWORD', 'password');

/**
 * You can also include other environment specifc
 * definitions here, such as enabling debug for

johnrlive

#!/bin/bash

# A bash script to update a Cloudflare DNS A record with the external IP of the source machine
# Used to provide DDNS service for my home
# Needs the DNS record pre-creating on Cloudflare

# Proxy - uncomment and provide details if using a proxy
#export https_proxy=http://<proxyuser>:<proxypassword>@<proxyip>:<proxyport>

# Cloudflare zone is the zone which holds the record

johnrlive

Start up a container (whichever Linux flavour takes your fancy):

docker run -it ubuntu /bin/bash
docker run -it centos /bin/bash

• top: check what CPU and Memory running processes are utilising
• ps: see what processes are running
• strace: monitor interactions between processes

johnrlive

Build Server

• Go to Digital Ocean
• Create new ubuntu droplet

Setup Server

johnrlive

# This is a blocklist to block samsung smart tv's sending meta data at home.
# Please help to collect domains!
# It could be that the TV does not receive any more updates or other services no longer work. Please report such an incident.

device-metrics-us.amazon.com
samsungacr.com
samsungcloudsolution.com
samsungcloudsolution.net
pavv.co.kr
samsungotn.net

johnrlive

function prompt_wikimatze_precmd {
  git-info
}

function prompt_wikimatze_setup {
  setopt LOCAL_OPTIONS
  unsetopt XTRACE KSH_ARRAYS
  prompt_opts=(cr percent subst)

  # Load required functions.

johnrlive

# Install Bash 5 using homebrew
# brew install bash

# Or build bash 4 from source...
curl -O http://ftp.gnu.org/gnu/bash/bash-4.4.18.tar.gz
tar xzf bash-4.4.18.tar.gz
cd bash-4.4.18
./configure --prefix=/usr/local/bin && make && sudo make install

# Add the new shell to the list of legit shells

johnrlive

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)