Contents Command Line Interface Guidelines An open-source guide to help you write better command-line programs, taking traditional UNIX principles and updating them for the modern day. Authors Aanand Prasad Engineer at Squarespace, co-creator of Docker Compose. @aanandprasad Ben Firshman Co-creator Replicate, co-creator of Docker Compose. @bfirsh Carl Tashian Offroad Engineer at Smallstep, first e
0 issue "letsencrypt.org" 0 issuewild "letsencrypt.org" 0 iodef "mailto:yourmail@example.jp" §OS再インストール 初期設定で期待通りの設定ができていない場合は、OSの再インストールをする。 さくらVPSのコントロールパネルから、OSを再インストールするサーバを選ぶ。 www99999ui.vs.sakura.ne.jp §OSのインストール操作 Ubuntu 24.04 LTS を選ぶ。 OSインストール時のパケットフィルタ（ポート制限）を無効にして、ファイアウォールは手動で設定することにする。 初期ユーザのパスワードに使える文字が制限されているので、ここでは簡単なパスワードにしておき、後ですぐに複雑なパスワードに変更する。 公開鍵認証できるように公開鍵を登録しておく。 §秘密鍵と公開鍵の作成 ク
Apache Iceberg とは何か - Bering Note – formerly 流沙河鎮
はじめに 概要 Apache Iceberg(アイスバーグ)とは [重要] Icebergの本質はテーブル仕様である Table Spec バージョン Icebergハンズオン Icebergの特徴 同時書き込み時の整合性担保 読み取り一貫性、Time Travelクエリ、Rollback Schema Evolution Hidden Partitioning Hidden Partitioningの種類 時間 truncate[W] bucket[N] Partition Evolution Sort Order Evolution クエリ性能の最適化 ユースケース Icebergのアーキテクチャ Iceberg Catalog Iceberg Catalogの選択肢 metadata layer metadata files manifest lists manifest files
Deploy applications on Amazon ECS using Docker Compose | Amazon Web Services
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Fish 4.0: The Fish Of Theseus
About two years ago, our head maintainer @ridiculousfish opened what quickly became our most-read pull request: #9512 - Rewrite it in Rust Truth be told, we did not quite expect that to be as popular as it was. It was written as a bit of an in-joke for the fish developers first, and not really as a press release to be shared far and wide. We didn’t post it anywhere, but other people did, and we go
yt-dlp オプション一覧及びそのメモ - †MASAYOSHI†のオンラインメモ帳
youtube-dlの開発が止まっておりfork版のyt-dlpに移る事にした。yt-dlpはyoutube-dlのforkであるyoutube-dlcのそのまたforkになる。オリジナルであるyoutube-dlのオプション解説はyoutube-dl オプション一覧及びそのメモ。 2022/06/19更新 2022/09/06更新 OPTIONS -h, --helpヘルプを表示する。 --versionプログラムのVerを表示する。 -U, --update --no-update (default)プログラムのupdateを実行するかどうか。 -i, --ignore-errorsダウンロードエラーを無視する。プレイリストごとダウンロードするような時に使う。エラーで失敗してもダウンロードは成功したとみなされる。 --no-abort-on-error (default) --abor
redbean
redbean single-file distributable web server redbean is an open source webserver in a single-file that runs natively on six OSes for both AMD64 and ARM64. Basic idea is if you want to build a web app that runs anywhere, then you download the redbean.com file, put your .html and .lua files inside it using the zip command, and you've got a hermetic app you deploy and share. redbean embeds Lua, SQLit
June 5, 2023 by Dirk Bäumer VS Code for the Web (https://vscode.dev) has been available for some time now and it has always been our goal to support the full edit / compile / debug cycle in the browser. This is relatively easy for languages like JavaScript and TypeScript since browsers ship with a JavaScript execution engine. It is harder for other languages since we must be able to execute (and t
Gamedev in Lisp. Part 1: ECS and Metalinguistic Abstraction - cl-fast-ecs by Andrew
Gamedev in Lisp. Part 1: ECS and Metalinguistic Abstraction In this series of tutorials, we will delve into creating simple 2D games in Common Lisp. The result of the first part will be a development environment setup and a basic simulation displaying a 2D scene with a large number of physical objects. It is assumed that the reader is familiar with some high-level programming language, has a gener
CUPID: for joyful coding
What started as lighthearted iconoclasm, poking at the bear of SOLID, has developed into something more concrete and tangible. If I do not think the SOLID principles are useful these days, then what would I replace them with? Can any set of principles hold for all software? What do we even mean by principles? I believe that there are properties or characteristics of software that make it a joy to
Over the course of my Spring 2020 semester at Harvey Mudd College, I developed a self-hosting compiler entirely from scratch. This article walks through many interesting parts of the project. It’s laid out so you can just read from beginning to end, but if you’re more interested in a particular topic, feel free to jump there. Or, take a look at the project on GitHub. Table of contents What the pro
Delimiter-first code
Summary I argue for wider usage of delimiter-first in the code three friends [tic, tac, toe] becomes three friends ・tic ・tac ・toe. A new top-level syntax for programming languages is proposed to show advantages of this method. New syntax is arguably as simple, but more consistent, better preserves visual structure and solves some issues in code formatting. Related: comma-first formatting A well-kn
python_modules.pdf
Python3 OpenCV / Pillow / pygame / Eel / PyDub / NumPy / matplotlib / SciPy / SymPy / gmpy2 / hashlib, passlib / Cython / Numba / ctypes / PyInstaller / curses / tqdm / JupyterLab / json / psutil / urllib / zenhan / jaconv Copyright © 2017-2025, Katsunori Nakamura 2025 8 19 Python ‘ .py’ Python Python Windows PSF Python py .py Enter macOS Linux PSF Python python3 .py Enter Anaconda Prompt Python p
Announcing Observable 2.0
Today we’re launching Observable 2.0 with a bold new vision: an open-source static site generator for building fast, beautiful data apps, dashboards, and reports. Our mission is to help teams communicate more effectively with data. Effective presentation of data is critical for deep insight, nuanced understanding, and informed decisions. Observable notebooks are great for ephemeral, ad hoc data ex
Tier 4 Support § Support for these targets is entirely experimental. If this target is provided by LLVM, LLVM may have the target as an experimental target, which means that you need to use Zig-provided binaries for the target to be available, or build LLVM from source with special configure flags. zig targets will display the target if it is available. This target may be considered deprecated by
Update 1.78.1: The update addresses this security issue. Update 1.78.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the April 2023 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Accessibility improvements - Better scre
redbean
redbean single-file distributable web server redbean is an open source webserver in a single-file that runs natively on six OSes for both AMD64 and ARM64. Basic idea is if you want to build a web app that runs anywhere, then you download the redbean.com file, put your .html and .lua files inside it using the zip command, and you've got a hermetic app you deploy and share. redbean embeds Lua, SQLit
It is December. That means annoying Christmas things are everywhere, including but not limited to the annual programming semi-competition known as Advent of Code. The problem with Advent of Code is that it is a waste of time. Most of the puzzles are in the realm of either string processing (somewhat applicable to programming), logic puzzles (not really applicable to most programming), or stupid go
Amazon ConnectとKinesis Data Streamsを使用し、エージェントの介在がないIVRの場合でも電話中のユーザーの発話を録音する方法 | DevelopersIO
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The Go Programming Language and Environment – Communications of the ACM
Go is a programming language created at Google in late 2007 and released as open source in November 2009. Since then, it has operated as a public project, with contributions from thousands of individuals and dozens of companies. Go has become a popular language for building cloud infrastructure: Docker, a Linux container manager, and Kubernetes, a container deployment system, are core cloud techno
This paper reflects work done in late 2022 and 2023 to audit for vulnerabilities in terminal emulators, with a focus on open source software. The results of this work were 10 CVEs against terminal emulators that could result in Remote Code Execution (RCE), in addition various other bugs and hardening opportunities were found. The exact context and severity of these vulnerabilities varied, but some
My thoughts on writing a Minecraft server from scratch (in Bash) For the past year or so, I've been thinking about writing a Minecraft server in Bash as a thought excercise. I once tried that before with the Classic protocol (the one from 2009), but I quickly realized there wasn't really a way to properly parse binary data in bash. Take the following code sample: function a() { read -n 2 uwu echo
PowerShell: the object-oriented shell you didn’t know you needed
PowerShell is an interactive shell and scripting language from Microsoft. It’s object-oriented — and that’s not just a buzzword, that’s a big difference to how the standard Unix shells work. And it is actually usable as an interactive shell. Getting Started PowerShell is so nice, Microsoft made it twice. Specifically, there concurrently exist two products named PowerShell: Windows PowerShell (5.1)
Introducing the new Wasmer JS SDKToday we are incredibly excited to present `@wasmer/sdk`, a new library that allows running WASI(X) applications easily on the browser Dive into a world where running any WASI and WASIX package in your browser is a breeze. Whether it's Python, Bash, FFmpeg, or any package published in the registry, Wasmer Javascript SDK makes it all seamlessly possible. We think th
State of the Common Lisp ecosystem, 2020 🎉 - Lisp journey
NEW: 9 videos (86min) about CLOS on my Common Lisp course. Out of 7h+ of content. Rated 4.7/5. Learn more and stay tuned. 🎥 I also have cool Lisp showcases on Youtube . The last ones: how to build a web app in Common Lisp, part 1 and 2. This is a description of the Common Lisp ecosystem, as of January, 2021, from the perspective of a user and contributor. The purpose of this article is both to gi
A blank screen and a blinking cursor. That’s all that greeted users when they booted up their machines in the early days of personal computing. No start menu. No icons. Just the command line. For many budding developers, that blinking cursor presented a mystery to be solved or an invitation to adventure. “It felt magical,” says Toby Padilla, co-founder of Charm, a company that makes tools for buil
Introduction Some part of me has always been fascinated with coercing code to run in weird places. I scratch this itch a lot with my security research projects. These often lead me to writing shellcode to run in kernels or embedded hardware, sometimes with the only way being through an existing bug. For those not familiar, shellcode is honestly hard to describe. I don’t know if there’s a very form
Reading the excellent article by JeanHeyd Meneide on how broken string encoding in C/C++ is made me realise that Unicode is a topic that is often overlooked by a large number of developers. In my experience, there’s a lot of confusion and wrong expectations on what Unicode is, and what best practices to follow when dealing with strings that may contain characters outside of the ASCII range. This a
When you work on your computer, there are so many things you take for granted: operating systems, programming languages, they all have to come from somewhere. In the late 1960s and 1970s, that somewhere was Bell Labs, and the operating system they were building was UNIX. They were building more than just an operating system though. They were building a way to work with computers that had never exi
I did this in 2020 and then again in 2021, but I’m in the mood to look around again. Let’s look through Are We GUI Yet? and see what’s up these days. The task today is to have a text label and an input field that can change the text in the label. In React, for example, this is basically free: const Demo = () => { let [state, setState] = useState("Hello, world!"); return ( <div> <p>{state}</p> <inp
Processing user-generated content using AWS Lambda and FFmpeg | Amazon Web Services
AWS for M&E Blog Processing user-generated content using AWS Lambda and FFmpeg In this post, we introduce a workflow to process media files stored in Amazon Simple Storage Service (Amazon S3) using AWS Lambda that doesn’t require copying files to Lambda’s local storage. Lambda is equipped with temporary storage space of 512 MB, which is often not sufficient for media processing. At the same time,
Try Mastering Emacs for free! Are you struggling with the basics? Have you mastered movement and editing yet? When you have read Mastering Emacs you will understand Emacs. It’s that time again: there’s a new major version of Emacs and, with it, a treasure trove of new features and changes. Notable features include the formal inclusion of native compilation, a technique that will greatly speed up y
Amazon FSx for NetApp ONTAPファイルシステム上のiSCSI LUNをマウントしてみた | DevelopersIO
Amazon FSx for NetApp ONTAPは単純なファイルサーバーじゃないぞ こんにちは、のんピ(@non____97)です。 皆さんはMulti-AZのEBSボリュームを欲しいなと思ったことはありますか? 私はあります。 EBSボリュームはAZ単位なのでAZ障害のことを考えるとちょっと心配です。かと言って自分でブロックレベルのレプリケーションを実装するのも何だか大変です。 そこで、Amazon FSx for NetApp ONTAPの出番です。 Amazon FSx for NetApp ONTAPはファイルサーバーとしての機能だけではなく、ブロックストレージとしての機能も有しています。 Q: Amazon FSx for NetApp ONTAP はどのプロトコルをサポートしていますか? A: Amazon FSx for NetApp ONTAP は、ネットワークファイ
GitHub - 9001/copyparty: Portable file server with accelerated resumable uploads, dedup, WebDAV, FTP, TFTP, zeroconf, media indexer, thumbnails++ all in one file, no deps
top quickstart - just run copyparty-sfx.py -- that's it! 🎉 at home - make it accessible over the internet on servers - you may also want these, especially on servers features - also see comparison to similar software testimonials - small collection of user feedback motivations - project goals / philosophy notes - general notes bugs - roughly sorted by chance of encounter not my bugs - same order
InfluxDB及びGrafanaを利用して為替損益を自動計算し可視化してみた - GMOインターネットグループ グループ研究開発本部
はじめに 最近円安の進行で値動きが激しいですね。特に９月に円相場は、24年ぶりの円安水準となる1ドル＝140円台前半まで下落しましたので、この状況で為替損益を常に監視したい方々が多くなるでしょう。今回はUSDJPYの為替レートを継続的にInfluxDBに格納し、Grafanaで為替損益を可視化するシステムの構築方法を紹介したいと思います。 ちなみに、為替レートの変動により生じた利益を為替差益、生じた損失を為替差損といいます。たとえば、米ドルを1ドル＝105円のときに購入した後、為替レートが円安方向に動いて1ドル＝120円となった場合、購入していたドルを円に交換すれば1ドルにつき15円の利益を得ることになり、これが為替差益となります。逆に、為替レートが円高に進んで1ドル＝100円となった場合は1ドルにつき5円の損失をこうむることになり、これが為替差損となります。 1.やりたいこと Docke
CloudShell VPC environment から VPC内のEC2インスタンスやRDS DBインスタンスに接続してみた | DevelopersIO
もっと簡単にVPC内のリソースにアクセスしたい こんにちは、のんピ(@non____97)です。 皆さんはもっと簡単にVPC内のリソースにアクセスしたいと思ったことはありますか? 私はあります。 VPC上のRDS DBインスタンスやRedisクラスターなどのリソースに接続したい場合、Site-to-Site VPNやClient VPN、Direct Connectがなければ踏み台が必要になります。 踏み台へのアクセス方法は以下のようなものがあります。 直接SSH SSMセッションマネージャー EC2 Instance Connect SSMセッションマネージャーとEC2 Instance Connectについては以下記事をご覧ください。 しかし、上述のいずれのパターンもEC2インスタンスやECS Fargateなどの課金が発生するリソースをプロビジョニングする必要があります。 そんな時に
A Lisp REPL as my main shell
If you enjoy this article and would like to help me keep writing, consider chipping in, every little bit helps to keep me going :) Thank you! Update: As of 2021-02-07, not all the code and configurations used in this presentation have been published. Should happen in the coming days, stay tuned! Introduction video The concepts I’m going to present in this article were featured in a presentation at
Amongst the many consequences of COVID-19 has been the suspension of in-person talks: suddenly, people like me have had to think about how to produce prerecorded videos. In this article I’m going to explain what I’ve come to understand about video recording and the “automatic video editing” technique I’ve used for videos such as Virtual Machine Warmup Blows Hot and Cold. To give you an idea of how
Foldable Words | bit-player
Packing up the household for a recent move, I was delving into shoeboxes, photo albums, and file folders that had not been opened in decades. One of my discoveries, found in an envelope at the back of a file drawer, was the paper sleeve from a drinking straw, imprinted with a saccharine message: This flimsy slip of paper seems like an odd scrap to preserve for the ages, but when I pulled it out of
Gruntwork Blog | A comprehensive guide to managing secrets in your Terraform code
A comprehensive guide to managing secrets in your Terraform code One of the most common questions we get about using Terraform to manage infrastructure as code is how to handle secrets such as passwords, API keys, and other sensitive data. For example, here’s a snippet of Terraform code that can be used to deploy MySQL using Amazon RDS: resource "aws_db_instance" "example" { engine = "mysql" eng
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