0 issue "letsencrypt.org" 0 issuewild "letsencrypt.org" 0 iodef "mailto:yourmail@example.jp" §逆引きホスト名の設定 サーバー側の管理画面から逆引きホスト名を設定します。 example.org §初回SSH接続時の初期設定 §SSH接続する ssh root@203.0.113.123 §SSH接続後のメッセージ（MOTD; Message Of The Day）を確認する XServer で Ubuntu 26.04 LTS をインストールした場合は以下のようになりました。 Welcome to Ubuntu 26.04 LTS (GNU/Linux 7.0.0-14-generic x86_64) * Documentation: https://docs.ubuntu.com * Manag
レッドハットの杉村です。Ansible のテクニカルサポートをしています。 今回は以前のお問い合わせいただいた事例から、SSH (Secure Shell Protocol) について一つ紹介しようと思います。Ansible は Linux サーバを制御対象とするときは SSH で接続して処理を実行しますので、SSH の通信についてのトラブルは問題に直結します。 RHEL 8.6 + Ansible Core 2.13 で確認しています。 Ansible の基本的な動作原理 まずは Ansible はどうやって動いているのかというのを軽く振り返ってみます。 Ansible が動作するサーバをコントロールノード、制御対象をマネージドノードと呼びます。流れを大まかに説明しますと、この図のようになります。 ① YAMLで書かれたプレイブックからタスクごとに小さなプログラムを生成する ② ①で生成
プロと読み解くRuby 4.0 NEWS テクノロジー部門技術推進グループの笹田（ko1）と遠藤（mame）です。Ruby (MRI: Matz Ruby Implementation、いわゆる ruby コマンド) の開発をしています。お金をもらって Ruby を開発しているのでプロの Ruby コミッタです。 本日 12/25 に、恒例のクリスマスリリースとして、Ruby 4.0.0 がリリースされました（Ruby 4.0.0 リリース | Ruby）。今年も STORES Product Blog にて Ruby 4.0 の NEWS.md ファイルの解説をします（ちなみに、STORES Advent Calendar 2025 の記事になります。他も読んでね）。NEWS ファイルとは何か、は以前の記事を見てください。 プロと読み解く Ruby 2.6 NEWS ファイル - クック
Note: As of 2022/10/25 the information in this series is slightly outdated. See Part 5 for more up to date information. The Car⌗ Last summer I bought a 2021 Hyundai Ioniq SEL. It is a nice fuel-efficient hybrid with a decent amount of features like wireless Android Auto/Apple CarPlay, wireless phone charging, heated seats, & a sunroof. One thing I particularly liked about this vehicle was the In-V
Lessons from Writing a Compiler
The prototypical compilers textbook is: 600 pages on parsing theory. Three pages of type-checking a first-order type system like C. Zero pages on storing and checking the correctness of declarations (the “symbol table”). Zero pages on the compilation model, and efficiently implementing separate compilation. 450 pages on optimization and code generation. The standard academic literature is most use
software engineer, emacs enthusiast, keyboard lover. occasionally nerdy. Thank you for the support, this blog post got featured on the front page of Hacker News (YCombinator). As an Emacs user, few things are as delightful as catching my favorite text editor out in the wild. It doesn’t happen often though – Emacs is niche, and pop culture rarely gives it a nod. This post tracks down every one I kn
Photo by Claudio Schwarz on Unsplash. How to create a Python package? In order to create a Python package, you need to write the code that implements the functionality you want to put in your package, and then you need to publish it to PyPI. That is the bare minimum. Nowadays, you can also set up a variety of other things to make your life easier down the road: continuous testing of your package;
Notable changes built-in .env file support Starting from Node.js 20.6.0, Node.js supports .env files for configuring environment variables. Your configuration file should follow the INI file format, with each line containing a key-value pair for an environment variable. To initialize your Node.js application with predefined configurations, use the following CLI command: node --env-file=config.env
This blog post hopes to convince you that Python is a compiled language. And by “Python”, I don’t mean alternate versions of Python like PyPy, Mypyc, Numba, Cinder, or even Python-like programming languages like Cython, Codon, Mojo1—I mean the regular Python: CPython! The Python that is probably installed on your computer right now. The Python that you got when you searched “python” on Google and
Update 1.80.1: The update addresses these issues. Update 1.80.2: The update addresses this security issue. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the June 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 - Accessible V
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
Version 1.108 is now available! Read about the new features and fixes from December. Release date: May 8, 2025 Update: Enable Next Edit Suggestions (NES) by default in VS Code Stable (more...). Update 1.100.1: The update addresses these security issues. Update 1.100.2: The update addresses these issues. Update 1.100.3: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Univers
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
Update 1.97.1: The update addresses these security issues. Update 1.97.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the January 2025 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Next Edit Suggestions (preview) - Co
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.66.1: The update addresses these issues. Update 1.66.2: The update addresses these security issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the March 2022 release of Visual Studio Code. There are many updates in this version that we ho
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
agent loop x4檪 You are Manus, an AI agent created by the Manus team. You excel at the following tasks: 1. Information gathering, fact-checking, and documentation 2. Data processing, analysis, and visualization 3. Writing multi-chapter articles and in-depth research reports 4. Creating websites, applications, and tools 5. Using programming to solve various problems beyond development 6. Various ta
Version 1.108 is now available! Read about the new features and fixes from December. Update 1.85.1: The update addresses these issues. Update 1.85.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the November 2023 release of Visual Studio Code. There are many updates in this version that we hope you'll l
jc
Skip to the content. Home jc JC - JSON Convert kellyjonbrazil@gmail.com This package converts the output of many standard unix command line tools and file-types to dictionaries and lists of dictionaries. Interactive Documentation Using jc in your python programs: >>> help('jc') >>> help('jc.lib') >>> jc.get_help('parser_module_name') Developing jc parsers: >>> help('jc.utils') >>> help('jc.streami
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
Blogged Answers: My Experience Modernizing Packages to ESM
Random musings on React, Redux, and more, by Redux maintainer Mark "acemarke" Erikson This is a post in the Blogged Answers series. Details on the painful experiences and hard-earned lessons I've learned migrating the Redux packages to ESM Table of Contents 🔗︎ Introduction Redux Packages Background Packages and Configurations Issue History Early Attempts Migrating to Vitest Initial Alpha Testing
Update: I originally published this post few months ago, and it only covered Turbo Drive and Turbo Frames then, with a static site. I've since had a bunch of conversations with people working with other tech stacks (Rust, PHP, and Go) wanting to integrate Hotwire into their front-ends, and everyone kept asking about Turbo Streams, since it needs a back-end server. So I've updated the post to build
const watcher = fs.watch(testDirectory, { recursive: true }); watcher.on('change', function (event, filename) {}); Contributed by Yagiz Nizipli in #45098 Other notable changes deps update ICU to 72.1 (Michaël Zasso) #45068 doc add lukekarrys to collaborators (Luke Karrys) #45180 add anonrig to collaborators (Yagiz Nizipli) #45002 lib drop fetch experimental warning (Matteo Collina) #45287 util (SE
Boring Python: code quality
Boring Python: code quality December 19, 2022 Django, Python This is the second in a series of posts I intend to write about how to build, deploy, and manage Python applications in as boring a way as possible. In the first post in the series I gave a definition of what I mean by “boring”, and it’s worth revisiting: I don’t mean “reliable” or “bug-free” or “no incidents”. While there is some overla
If you are a Rubyist, you’ve likely been writing # frozen_string_literal: true at the top of most of your Ruby source code files, or at the very least, that you’ve seen it in some other projects. Based on informal discussions at conferences and online, it seems that what this magic comment really is about is not always well understood, so I figured it would be worth talking about why it’s there, w
Update 1.94.1: The update addresses this security issue. Update 1.94.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the September 2024 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Find in Explorer - Quickly find file
Pyrefly v1.0 is here! | Pyrefly
Today we are pleased to share that Pyrefly, our open source type checker and language server for Python, has reached stable version 1 status, meaning we are confident that Pyrefly is ready for production use. Pyrefly is a Python code analysis tool for helping you find bugs in your code, provide structure for your AI agents and give you faster navigation in your IDE. It was first released as an alp
Release date: November 12, 2025 Update 1.106.1: The update addresses these issues Update 1.106.2: The update addresses these issues Update 1.106.3: The update addresses these issues Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the October 2025 release of Visual Studio Code. This release brings significant updates across three key areas:
--- name: skill-creator description: Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations. license: Complete terms in LICENSE.txt --- # Skill Creator This skill provides guidance for creating effective skills. ## About Skills S
Arti 1.0.0 is released: Our Rust Tor implementation is ready for production use. | Tor Project
Arti 1.0.0 is released: Our Rust Tor implementation is ready for production use. by nickm | September 2, 2022 Back in 2020, we started work on a new implementation of the Tor protocols in the Rust programming language. Now we believe it's ready for wider use. In this blog post, we'll tell you more about the history of the Arti project, where it is now, and where it will go next. Background: Why Ar
Version 1.108 is now available! Read about the new features and fixes from December. Update 1.75.1: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the January 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: Profiles -
Unix ASCII games
Unix ASCII games View the Project on GitHub ligurio/awesome-ttygames Unix ASCII games Feel free to submit pull requests to add new games and improve information about those already in the database. How to contribute Check games.yaml out. All information is inside, and you should more or less understand what’s going on by reading it. Sorting is alphabetical. Simplest way to contribute: edit games.y
Update 1.60.1: The update addresses these issues. Update 1.60.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the August 2021 release of Visual Studio Code. There are many updates in this version that we hope you will like, some of the key highlights include: Automatic language detection - Programming l
Update 1.87.1: The update addresses these issues. Update 1.87.2: The update addresses this security issue. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the February 2024 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: Voice dictation in editor - Use your
I’m excited to announce the project I’ve been working on for the last year and a half: Game Bub, an open-source FPGA based retro emulation handheld, with support for Game Boy, Game Boy Color, and Game Boy Advance games. May 2025 Update: Want to buy a prebuilt Game Bub? I’m launching a crowdfunding campaign on Crowd Supply! Sign up to be notified when the campaign goes live. Play Video: Game Bub ca
EC2インスタンスのユーザーデータ内のdnfコマンドやyumコマンドが失敗する場合の緩和策を考えてみた | DevelopersIO
ユーザーデータでパッケージのインストールをしようとすると失敗するんだが こんにちは、のんピ(@non____97)です。 皆さんはEC2インスタンスのユーザーデータでdnfコマンドやyumコマンドが失敗したことはありますか? 私はあります。 具体的にはユーザーデータでdnf upgradeやdnf install パッケージ名を実行すると、以下のようにRPM: error: can't create transaction lock on /var/lib/rpm/.rpm.lock (Resource temporarily unavailable)とログが出力されます。 $ dnf upgrade -y --releasever=latest Amazon Linux 2023 repository 30 MB/s | 23 MB 00:00 Amazon Linux 2023 Ker
August 19, 2021 Hello! Recently I’ve been thinking about why I explain things the way I do. The usual way I write is: Try to learn a topic Read a bunch of explanations that I find confusing Eventually understand the topic Write an explanation that makes sense to me, to help others So why do I find all these explanations so confusing? I decided to try and find out! I came up with a list of 13 patte
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
Node.js
Notable changes Add support for externally shared js builtins By default Node.js is built so that all dependencies are bundled into the Node.js binary itself. Some Node.js distributions prefer to manage dependencies externally. There are existing build options that allow dependencies with native code to be externalized. This commit adds additional options so that dependencies with JavaScript code
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Ubuntu 26.04 LTS サーバー構築手順書
Ansible の SSH の通信をデバッグする - 赤帽エンジニアブログ
プロと読み解くRuby 4.0 NEWS - STORES Product Blog
How I Hacked my Car
Emacs Appearances in Pop Culture
How to create a Python package in 2022
Node.js — Node.js 20.6.0 (Current)
Python is a Compiled Language
June 2023 (version 1.80)
Kalyn: a self-hosting compiler for x86-64
April 2025 (version 1.100)
April 2023 (version 1.78)
January 2025 (version 1.97)
March 2022 (version 1.66)
"�[31m"?! ANSI Terminal security in 2023 and finding 10 CVEs
Manus tools and prompts
November 2023 (version 1.85)
0.10.0 Release Notes ⚡ The Zig Programming Language
You Don't Need Rails to Start Using Hotwire
Node.js — Node.js 19.1.0 (Current)
Frozen String Literals: Past, Present, Future?
September 2024 (version 1.94)
October 2025 (version 1.106)
prompts.chat - AI Prompts Community
January 2023 (version 1.75)
August 2021 (version 1.60)
February 2024 (version 1.87)
Game Bub: open-source FPGA retro emulation handheld
Patterns in confusing explanations
What's New in Emacs 28.1?