Peter Fries pfries

☁️ How I got off the cloud and migrated everything from AWS to a VPS in Hetzner

This is an opinionated handbook on how I migrated all my Rails apps off the cloud and into VPS.

This is how I manage real production loads for my Rails apps. It assumes:

Rails 7+
Ruby 3+
PostgreSQL
Ubuntu Server 24.04
Capistrano, Puma, Nginx

Recon and Attack Vectors from My Logs

This document contains excerpts from my web server logs collected over a period of 7 years that shows various kinds of recon and attack vectors.

There were a total of 37.2 million lines of logs out of which 1.1 million unique HTTP requests (Method + URI) were found.

$ sed 's/^.* - - \[.*\] "\(.*\) HTTP\/.*" .*/\1/' access.log &gt; requests.txt

Creating Shakespearean n-grams with just the command-line and regexes

This is a quick example showing how to use regexes to find tri-grams in Shakespeare...well, 570,872 of them, anyway, if we do some basic filtering of non-dialogue.

Though tokenization and n-grams should typically be done using a proper natural language processing framework, it's possible to do in a jiffy from the command-line, using standard Unix tools and ack, the better-than-grep utility.

What are n-grams?

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

Am I ready to Open Source This?

The checklist:

A readme following a good template
A contributing.md with a code of conduct.
A license
Travis configuration
A way for people to raise issues
Link to it

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

Kansas City Style Hot'n'Tangy BBQ Sauce Recipe

This is a spicy, tangy take on AmazingRibs.com's KC-style sauce. It's as close to Johnny Trigg's original sauce as I can get.

Yields about 6 cups

Ingredients

Dry

2 tablespoons American chili powder

	import argpase
	import fileinput

	if __name__ == '__main__':
	parser = ArgumentParser()
	parser.add_argument('--dummy', help='dummy argument')
	parser.add_argument('files', metavar='FILE', nargs='*', help='files to read, if empty, stdin is used')
	args = parser.parse_args()

	# If you would call fileinput.input() without files it would try to process all arguments.