Anders Wiberg Olsen algorythm

Keybase proof

I hereby claim:

I am algorythm on github.
I am wiberg (https://keybase.io/wiberg) on keybase.
I have a public key ASD46EvtNkCCtaKSQSfEUayBqqYnbzK-g__01wDwpxGwrwo

To claim this, I am signing this object:

Introduction

This Gist contains a few tips and tricks that I've gathered over time to optimize my experience when working on unix based systems. Some of the things mentioned in this document, will explained in further detail below. This file will contain things in a more compact manner.

General Networking

Ping

Ping though a specific NIC:

Find the default network configuration file:

$ ls /etc/netplan/
50-cloud-init.yaml

Check the contents of the file:

Secure Arch Linux Install

Following this guide from YouTube: https://www.youtube.com/watch?v=gB1N00wj3bw

This installation procedure follows installing a secure encrypted lvm version of Arch Linux on my MacBook Pro in Parallels.

Harddisk Setup

Let us start by looking at the naming of harddrives:

CTF tips

Recon the server

It is a good idea to start a port scan on the server. A very basic fast way is:

nmap -sS <ip/fqdn>

Setup GPG Key

Install latest GPG version (the one MacOS ships with is out of date):

$ brew install gpg2 gnupg pinentry-mac

Create a new GPG key

	// ...
	var userTask = _context.Users
	.ByUserId(userId)
	.FirstOrDefaultAsync();
	var postTask = _context.SocialFeedPosts
	.ByPostId(postId)
	.FirstOrDefaultAsync();

	await Task.WhenAll(userTask, postTask);

	from http.server import BaseHTTPRequestHandler, HTTPServer
	import webbrowser

	def get_code_from_httpserver(address = "127.0.0.1", port = 8000):
	"""
	Starts a webserver

	When a GET request with query parameter "?code=something" is
	received, stop the webserver and return that code
	"""

	#!/bin/bash

	# Call this file with `bash ./project-create.sh project-name [service-name]`
	# - project-name is mandatory
	# - service-name is optional

	# This will creates 4 directories and a git `post-receive` hook.
	# The 4 directories are:
	# - $GIT: a git repo
	# - $TMP: a temporary directory for deployment

	public static void SleepSort(int[] list)
	{
	foreach (var i in list)
	{
	Task.Run(() =>
	{
	Thread.Sleep(i);
	Console.Write($"{i} ");
	});
	}