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
はじめに 対象イベント 読み方、使い方 Remote Code Execution(RCE) 親ディレクトリ指定によるopen_basedirのバイパス PHP-FPMのTCPソケット接続によるopen_basedirとdisable_functionsのバイパス JavaのRuntime.execでシェルを実行 Cross-Site Scripting(XSS) nginx環境でHTTPステータスコードが操作できる場合にCSPヘッダーを無効化 GoogleのClosureLibraryサニタイザーのXSS脆弱性 WebのProxy機能を介したService Workerの登録 括弧を使わないXSS /記号を使用せずに遷移先URLを指定 SOME(Same Origin Method Execution)を利用してdocument.writeを順次実行 SQL Injection MySQ
Linux Crisis Tools
(This is based on Table 4.1 "Linux Crisis Tools" in SysPerf 2.) Some longer notes: [1] bcc and bpftrace have many overlapping tools: the bcc ones are more capable (e.g., CLI options), and the bpftrace ones can be edited on the fly. But that's not to say that one is better or faster than the other: They emit the same BPF bytecode and are equally fast once running. Also note that bcc is evolving and
何年後かの自分へ こんにちは、のんピ(@non____97)です。 業務で使用する新しいMacが届きました。 新しいMacを初期セットアップするにあたって「今の設定どうだったっけ...」と調べる時間が結構かかってしまいました ということで何年後かの自分がまた新しいMacに乗り換える際に手間取らないように、設定した内容を書き記しておきます。 移行先のMacの情報は以下の通りです。M1 Max、嬉しい。 # OSのバージョンの確認 > sw_vers ProductName: macOS ProductVersion: 12.4 BuildVersion: 21F79 # カーネルのバージョン確認 > uname -r 21.5.0 # CPUのアーキテクチャの確認 > uname -m arm64 # CPUの詳細確認 > sysctl -a machdep.cpu machdep.cpu.
GitHub - modelcontextprotocol/servers: Model Context Protocol Servers
Official integrations are maintained by companies building production ready MCP servers for their platforms. 21st.dev Magic - Create crafted UI components inspired by the best 21st.dev design engineers. 2slides - An MCP server that provides tools to convert content into slides/PPT/presentation or generate slides/PPT/presentation with user intention. ActionKit by Paragon - Connect to 130+ SaaS inte
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
Introducing Ezno
Ezno is an experimental compiler I have been working on and off for a while. In short, it is a JavaScript compiler featuring checking, correctness and performance for building full-stack (rendering on the client and server) websites. This post is just an overview of some of the features I have been working on which I think are quite cool as well an overview on the project philosophy ;) It is still
Google ColabとVSCodeを用いた分析環境運用方法 〜kaggle Tipsを添えて〜 - ギークなエンジニアを目指す男
こんにちは。takapy（@takapy0210）です。 本エントリは下記イベントでLTした内容の元に、補足事項やコードスニペットなどをまとめたものになります。 kaggle-friends.connpass.com ちなみに今回LTしようと思ったきっかけは以下のような出来事からだったので、みなさんのTipsなども教えていただけると嬉しいです！ 情報出回ってる感あるけど、colab pro × vscode ssh のオレオレ運用方法を晒すことにより、もっと良い方法のフィードバックもらえるのではドリブンでLTするのはありなのかもしれない・・・？— takapy | たかぱい (@takapy0210) 2021年8月1日 LT資料 当日みなさんから頂いたコメント 環境構築手順 ngrokアカウント作成と認証キーの取得 ColabにGoogleドライブを接続、ngrok、sshサーバー起動
PacketProxyで探るGemini CLIのコンテキストエンジニアリング 〜AIエージェントを信頼できる相棒に〜 | BLOG - DeNA Engineering
2025.07.18 技術記事 PacketProxyで探るGemini CLIのコンテキストエンジニアリング 〜AIエージェントを信頼できる相棒に〜 by akira.kuroiwa #gemini-cli #ai #security #ai-agent #context-engineering #packetproxy 「なんかよく分からないけど、すごい」で終わらせないために こんにちは、DeNA セキュリティ技術グループの 黒岩 亮 ( @kakira9618 ) です。 AIエージェント、とくに Gemini CLI のようなコーディングを支援してくれるツールは非常に強力で、私たちの開発体験を大きく変えようとしています。しかし、その一方で、こんな風に感じたことはありませんか？ 「このファイルの情報、勝手にAIに送られたりしない？ 大丈夫かな？」 と、情報管理・セキュリティ面で漠然と
Modern Emacs Typescript Web (React) Config with lsp-mode, treesitter, tailwind, TSX & more - Ovi Stoica
Table of Contents Introduction Part 1: Treesitter for Typescript & TSX LSP Support Completion setup Linter setup LSP Setup Eslint (Optional) Tailwind LSP Server LSP Performance Emacs LSP Booster Structural editing Formatting buffers with Prettier Other resources Conclusion Introduction I've worked within the JS ecosystem for the past 8 years using editors like Webstorm and VSCode, I started using
Introducing Amazon MemoryDB for Redis – A Redis-Compatible, Durable, In-Memory Database Service | Amazon Web Services
AWS News Blog Introducing Amazon MemoryDB for Redis – A Redis-Compatible, Durable, In-Memory Database Service Interactive applications need to process requests and respond very quickly, and this requirement extends to all the components of their architecture. That is even more important when you adopt microservices and your architecture is composed of many small independent services that communica
LogLog Games
The article is also available in Chinese. Disclaimer: This post is a very long collection of thoughts and problems I've had over the years, and also addresses some of the arguments I've been repeatedly told. This post expresses my opinion the has been formed over using Rust for gamedev for many thousands of hours over many years, and multiple finished games. This isn't meant to brag or indicate su
第675回ではapt-keyコマンドが廃止される理由を説明しました。それ以外にもaptコマンドには常に様々な変更が加えられています。今回はそれらをいくつかピックアップして紹介しましょう。 Apt 1.0.xから2.3.xまでの流れ 本連載でaptコマンドそのものを紹介したのは、7年以上前の第327回「aptコマンドを使ってみよう」まで遡ります。当時はApt 1.0がリリースされて間もないころで、数週間後に登場したUbuntu 14.04 LTSにもApt 1.0が取り込まれています。Apt 1.0ではこれまで別々のコマンドだった各種ツールがサブコマンドとして一元化して使えるaptコマンドが実装された記念すべきリリースでもありました。 その後7年を経て、2021年7月時点でのバージョンは2.3.6にまで到達しています。まもなくリリースされる予定のDebian 11ではApt 2.2.xが採用
【10周年前祝い】歴史・年表でみるAWSサービス(AWS Lambda編) －機能一覧・概要・アップデートのまとめ・入門－ - NRIネットコムBlog
小西秀和です。 「歴史・年表でみるAWS全サービス一覧 －アナウンス日、General Availability(GA)、AWSサービス概要のまとめ－」から始まった、AWSサービスを歴史・年表から機能を洗い出してまとめるシリーズの第8弾です(過去、Amazon S3、AWS Systems Manager、Amazon Route 53、Amazon EventBridge、AWS KMS、Amazon SQSについて書きました)。 今回は2014年11月にアナウンスされたサーバーレスでフルマネージドなコード実行サービスを提供するAWS Lambdaについて歴史年表を作成してみました。 今年2024年11月にはAWS Lambdaがアナウンスから10周年を迎えるということで、かなり早めではありますが前祝いという意味も含めて、この記事を書きました。 今回もAWS Lambdaの誕生から機能追
Hello everyone, Asahi Lina here!✨ marcan asked me to write an article about the M1 GPU, so here we are~! It’s been a long road over the past few months and there’s a lot to cover, so I hope you enjoy it! What’s a GPU?You probably know what a GPU is, but do you know how they work under the hood? Let’s take a look! Almost all modern GPUs have the same main components: A bunch of shader cores, which
This is a companion article to a talk about Docker+WebAssembly that we gave at "Docker Community All Hands 7, Winter Edition" on Dec 15th, 2022. Introduction Recently Docker announced support for WebAssembly in cooperation with WasmEdge. This article will explain what is WebAssembly, why it is relevant to the Docker ecosystem and provide some hands-on examples to try on. We assume you are familiar
Happy New Year everyone! In late December 2023 (Christmas Day to be precise), CPython core developer Brandt Bucher submitted a little pull-request to the Python 3.13 branch adding a JIT compiler. This change, once accepted would be one of the biggest changes to the CPython Interpreter since the Specializing Adaptive Interpreter added in Python 3.11 (which was also from Brandt along with Mark Shann
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;
Today we’re excited to announce the release of TypeScript 5.2! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe types. Writing types in our code allows us to explain intent and have other tools check our code to catch mistakes like typos, issues with null and undefined, and more. Types also power TypeScript’s edi
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
Notes by djb on using Fil-C (2025) I'm impressed with the level of compatibility of the new memory-safe C/C++ compiler Fil-C (filcc, fil++). Many libraries and applications that I've tried work under Fil-C without changes, and the exceptions haven't been hard to get working. I've accumulated miscellaneous notes on this page regarding usage of Fil-C. My selfish objective here is to protect various
Piccolo - A Stackless Lua Interpreter 2024-05-01 History of piccolo A "Stackless" Interpreter Design Benefits of Stackless Cancellation Pre-emptive Concurrency Fuel, Pacing, and Custom Scheduling "Symmetric" Coroutines and coroutine.yieldto The "Big Lie" Rust Coroutines, Lua Coroutines, and Snarfing Zooming Out piccolo is an interpreter for the Lua language written in pure, mostly safe Rust with a
Internet Engineering Task Force (IETF) K. Davis Request for Comments: 9562 Cisco Systems Obsoletes: 4122 B. Peabody Category: Standards Track Uncloud ISSN: 2070-1721 P. Leach University of Washington May 2024 Universally Unique IDentifiers (UUIDs) Abstract This specification defines UUIDs (Universally Unique IDentifiers) -- also known as GUIDs (Globally Unique IDentifiers) -- and a Uniform Resou
Vjeux » Birth of Prettier
React Conf is around the corner and it's been almost 10 years since Prettier was released. I figured it would be a good time to recount the journey from its early days to now. This is the story of how the "Space vs Tabs Holy War" ended, not through one side winning over the other but instead a technological invention making it the underlying source of tensions no longer being a thing. Back Story S
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
Why GitHub Actually Won
A few days ago, a video produced by @t3dotgg was posted to his very popular YouTube channel where he reviews an article written by the Graphite team titled “How GitHub replaced SourceForge as the dominant code hosting platform”. Theo’s title was a little more succinct, “Why GitHub Won”. Being a cofounder of GitHub, I found Greg’s article and Theo’s subsequent commentary fun, but figured that it mi
AST vs. Bytecode: Interpreters in the Age of Meta-Compilation
233 AST vs. Bytecode: Interpreters in the Age of Meta-Compilation OCTAVE LAROSE, University of Kent, UK SOPHIE KALEBA, University of Kent, UK HUMPHREY BURCHELL, University of Kent, UK STEFAN MARR, University of Kent, UK Thanks to partial evaluation and meta-tracing, it became practical to build language implementations that reach state-of-the-art peak performance by implementing only an interprete
Today we’re excited to announce our Release Candidate of TypeScript 5.2! Between now and the stable release of TypeScript 5.2, we expect no further changes apart from critical bug fixes. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm install -D typescript@rc Here’s a quick list of what’s new in TypeScript 5.2! using Declarations and Explic
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.67.1: The update addresses this security issue. Update 1.67.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the April 2022 release of Visual Studio Code. There are many updates in this version that we hope
Version 1.108 is now available! Read about the new features and fixes from December. Release date: June 12, 2025 Security update: The following extension has security updates: ms-python.python. Update 1.101.1: The update addresses these issues. Update 1.101.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome t
Parsing SQL - Strumenta
The code for this tutorial is on GitHub: parsing-sql SQL is a language to handle data in a relational database. If you worked with data you have probably worked with SQL. In this article we will talk about parsing SQL. It is in the same league of HTML: maybe you never learned it formally but you kind of know how to use it. That is great because if you know SQL, you know how to handle data. However
I've used many content formats over the years, and while I love Markdown, I run into its limitations daily when I work on larger documentation projects. In this issue, you'll look at Markdown and explore why it might not be the best fit for technical content, and what else might work instead. Markdown Lacks the Structure You Need Markdown is everywhere. It's human-readable, approachable, and has j
Amazon Linux 2023, a Cloud-Optimized Linux Distribution with Long-Term Support | Amazon Web Services
AWS News Blog Amazon Linux 2023, a Cloud-Optimized Linux Distribution with Long-Term Support 11/17/2025 Update: Amazon Linux 2 end of support date (End of Life, or EOL) has been extended to 2026-06-30. I am excited to announce the general availability of Amazon Linux 2023 (AL2023). AWS has provided you with a cloud-optimized Linux distribution since 2010. This is the third generation of our Amazon
The /llms.txt file – llms-txt
A proposal to standardise on using an /llms.txt file to provide information to help LLMs use a website at inference time. Background Large language models increasingly rely on website information, but face a critical limitation: context windows are too small to handle most websites in their entirety. Converting complex HTML pages with navigation, ads, and JavaScript into LLM-friendly plain text is
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.70.1: The update addresses these issues. Update 1.70.2: The update addresses these issues. Update 1.70.3: This update is only available for Windows 7 users and is the last release supporting Windows 7. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welc
A Walk with LuaJIT
The following is a chronicle of implementing a general purpose zero-instrumentation BPF based profiler for LuaJIT. Some assumptions are made about what this entails and it may be helpful to read some of our other work in this area. One major change from prior efforts is that instead of working with the original Parca unwinder we are now working with the OpenTelemetry eBPF profiler. If you missed t
Detailed here are some of the tools and techniques we use to test the GNU coreutils project, which should present some useful ways to automate the use of tools like gdb, strace, valgrind, sed, grep, or the coreutils themselves etc., either for testing or for other applications. We also describe general techniques like using timeouts in a robust and performant way. Test framework automake's test fr
The OpenSSL punycode vulnerability (CVE-2022-3602): Overview, detection, exploitation, and remediation | Datadog Security Labs
emerging threats and vulnerabilities The OpenSSL punycode vulnerability (CVE-2022-3602): Overview, detection, exploitation, and remediation November 1, 2022 emerging vulnerability On November 1, 2022, the OpenSSL Project released a security advisory detailing a high-severity vulnerability in the OpenSSL library. Deployments of OpenSSL from 3.0.0 to 3.0.6 (included) are vulnerable and are fixed in
How Much Memory Do You Need to Run 1 Million Concurrent Tasks? | Piotr Kołaczkowski
In this blog post, I delve into the comparison of memory consumption between asynchronous and multi-threaded programming across popular languages like Rust, Go, Java, C#, Python, Node.js and Elixir. Some time ago I had to compare performance of a few computer programs designed to handle a large number of network connections. I saw huge differences in memory consumption of those programs, even exce
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Ubuntu 24.04 LTS サーバ構築手順書
【2020年】CTF Web問題の攻撃手法まとめ - こんとろーるしーこんとろーるぶい
ぼくのMac環境 ver.のんピ | DevelopersIO
プロと読み解くRuby 4.0 NEWS - STORES Product Blog
How I Hacked my Car
第676回 aptコマンドの最新機能あれこれ | gihyo.jp
Tales of the M1 GPU - Asahi Linux
WebAssembly: Docker without containers!
Python 3.13 gets a JIT
How to create a Python package in 2022
Announcing TypeScript 5.2 - TypeScript
Notes by djb on using Fil-C (2025)
kyju.org - Piccolo - A Stackless Lua Interpreter
RFC 9562: Universally Unique IDentifiers (UUIDs)
Python is a Compiled Language
Announcing TypeScript 5.2 RC - TypeScript
April 2022 (version 1.67)
May 2025 (version 1.101)
Issue 45 - Markdown is Holding You Back
July 2022 (version 1.70)
How the GNU coreutils are tested