Harry Kurn owl4ce

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

Common

export OPT=/opt
export BUILDS=/some/where/mini_linux
mkdir -p $BUILDS

Linux kernel

Exhaustive list of SPDX (Software Package Data Exchange) licenses: https://spdx.org/licenses/

How to use matrix.org and vector.im as an IRC client

How to Join an IRC Channel on matrix.org

Join the room #freenode_<#channel>:matrix.org, replacing <#channel> with the name of the IRC channel. For example, in order to join the #prometheus IRC channel, join the room #freenode_#prometheus:matrix.org on matrix.org.

In vector.im, rooms can be joined with the directory symbol on the bottom left.

Symmetic encryption

For symmetic encryption, you can use the following:

To encrypt:

openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt

To decrypt:

	#!/usr/bin/env python
	from __future__ import print_function

	import os
	import shutil
	import subprocess


	def get_width(default=80):
	'''Attempt to detect console width and default to 80'''

	/*
	* This is free and unencumbered software released into the public domain.
	*
	* For more information, please refer to <https://unlicense.org>
	*/

	//Regular text
	#define BLK "\e[0;30m"
	#define RED "\e[0;31m"
	#define GRN "\e[0;32m"

	commit ea830e03d4d4562b1ff225940f65bceddd9cad6c
	Author: Hayaki Saito <[email protected]>
	Date: Sun Jun 11 23:46:45 2017 +0900

	Add sixel graphics support

	Signed-off-by: Hayaki Saito <[email protected]>

	diff --git a/Makefile b/Makefile
	index d8595fe..a25d040 100644

	#include <iostream>

	#include "borrow_checker.hpp"

	int main()
	{
	auto i = 42;

	// borrow `i` under name `ref`
	borrow_var(ref, i)

	#!/bin/bash

	# Tom Hale, 2016. MIT Licence.
	# Print out 256 colours, with each number printed in its corresponding colour
	# See http://askubuntu.com/questions/821157/print-a-256-color-test-pattern-in-the-terminal/821163#821163

	set -eu # Fail on errors or undeclared variables

	printable_colours=256