jsomers

Using websockets to easily build GUIs for Python programs

I recently built a small agent-based model using Python and wanted to visualize the model in action. But as much as Python is an ideal tool for scientific computation (numpy, scipy, matplotlib), it's not as good for dynamic visualization (pygame?).

You know what's a very mature and flexible tool for drawing graphics? The DOM! For simple graphics you can use HTML and CSS; for more complicated stuff you can use Canvas, SVG, or WebGL. There are countless frameworks, libraries, and tutorials to help you draw exactly what you need. In my case, this was the animation I wanted:

(Each row represents a "worker" in my model, and each rectangle represents a "task.")

klange

Note: This article is a work-in-progress.

From Boot to HTTP: A Line-by-Line Analysis

A few years ago I did a talk about ToaruOS in which I traced through the system and explained how typing in a terminal worked at each layer. ToaruOS has changed a lot since then, and the slides from that talk have become outdated. Additionally, the level of detail to which a 40-minute talk can delve is limited, but an article can go much deeper. With the recent development of ToaruOS-NIH, a completely in-house distribution of ToaruOS with all code under the NCSA license, I figured it was time to approach that challenge again.

Background

This article is a followup to my talk at Yelp, which itself was inspired by an article that posed the following question:

TeMPOraL

;;;; A webserver in Emacs, because why not.
;;;; Basically a fast replacement for serve_this in Fish.



(use-package web-server
  :config
  (defvar my/file-server nil "Is the file server running? Holds an instance if so.")

  (defun my/ws-start (handlers port &optional log-buffer &rest network-args)

jdarpinian

///$(which true);FLAGS="-g -Wall -Wextra --std=c17 -O1 -fsanitize=address,undefined";THIS_FILE="$(cd "$(dirname "$0")"; pwd -P)/$(basename "$0")";OUT_FILE="/tmp/build-cache/$THIS_FILE";mkdir -p "$(dirname "$OUT_FILE")";test "$THIS_FILE" -ot "$OUT_FILE" || $(which clang || which gcc) $FLAGS "$THIS_FILE" -o "$OUT_FILE" || exit $?;exec bash -c "exec -a \"$0\" \"$OUT_FILE\" $([ $# -eq 0 ] || printf ' "%s"' "$@")"
#include <stdio.h>

int main() {
  printf("Hello world!\n");
  return 0;
}

razimantv

skottler

Setting up netboot.xyz with an EdgeRouter

This document covers how to setup netboot.xyz, a service that provides iPXE-based installation and live boot of a bunch of operating systems, on a Ubiquiti EdgeRouter.

Assumptions

I've made a few assumptions throughout this document that will probably be different for your setup:

acolyer

A collection of The Morning Paper posts relating to containers, operating systems etc.

In order of first appearance in The Morning Paper.

• On the duality of operating system structures
• Why threads are a bad idea
• Why events are a bad idea
• Unikernels: library operating systems for the cloud
• The scalable commutativity rule: designing scalable software for multicore processors
• Jitsu: just-in time summoning of unikernels

joyeusenoelle

This guide now lives at https://github.com/joyeusenoelle/GuideToMastodon/ - please check there for updates, and feel free to submit a PR if you have suggestions or want to submit a translation!

Table of Contents

• What is Mastodon?
• How is it like Twitter?
• How is it like email?
• How is it not like either of those?
• How do I establish my brand's presence on Mastodon?
• How do I get verified on Mastodon?

Aliireeza

/*
 * Demonstrate a trivial filesystem using libfs.
 *
 * Copyright 2002, 2003 Jonathan Corbet <corbet@lwn.net>
 * This file may be redistributed under the terms of the GNU GPL.
 *
 * Chances are that this code will crash your system, delete your
 * nethack high scores, and set your disk drives on fire.  You have
 * been warned.
 */

przemoc

#!/bin/sh
# SPDX-License-Identifier: MIT

## Copyright (C) 2017 Przemyslaw Pawelczyk <przemoc@gmail.com>
##
## This script is licensed under the terms of the MIT license.
## https://opensource.org/licenses/MIT
#
# Traffic control - Make DNS requests delayed and low priority on Linux.