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Recent posts

2026

New Feature: Mount S3 Buckets to EC2 Using Amazon S3 Files
Inspecting AI Coding Tool Traffic with mitmproxy
Configuration of Passkeys (WebAuthn) using Amazon Cognito
Calling the Vertex AI Gemini API from PowerShell
What is CORS? An Explanation of Security for Beginners
Development of the translation CLI tool translate-mcp supporting multiple languages using OpenAI API
Comparing Anthropic API and AWS Bedrock Pricing
Why Bold Text Uses Gothic (Sans-serif) Font in Japanese Typography
How I Achieved Near-Perfect Lighthouse Scores on a Docusaurus Blog — SEO, Performance & Accessibility
How to Create Japanese PDFs with pLaTeX
Installing TeX Live 2026 on Linux
What Are AI Agent Skills? How They Work, Explained Simply
Building a Blog Comment API with AWS Serverless
Creating Hime — A VSCode Extension for Chatting with Multiple Generative AI Agents
I Built a Cloud Storage Service with AWS Serverless
Installing Rocky Linux 8.10 on WSL2
Investigation into the Best Compression Method

2025

Libertouch ES (JP) Review
How to create certificates using mkcert on Raspberry Pi for cockpit and configure them on the server (cockpit) and browser
How to install OpenStreetMap with podman
Publishing a Website Using Raspberry Pi as a Server
How to install Mozc on AlmaLinux 10 (Raspberry Pi 5 / GNOME / aarch64)
Interacting with GPT-5 via API
Exploring Local MCP Behavior by Running Commands
Installing Rocky Linux 8.10 on WSL
Enable epel-release on RHEL 10.0
EC2 Instance Connect fails to connect from Windows without a key
EC2 Instance Connect Summary
Using Official Rocky Linux Images on AWS
A Collection of Free Software for Initializing a PC Setup
How to Connect to Ubuntu in Hyper-V via Serial Console

2024

Open-source password manager Nanohana
Observing the VOICEVOX API
How to enable scrolling for fluent-listbox (@fluentui/web-components)
A simple solution to the problem of converting 0.248 (16) to a decimal fraction (Fundamental Information Technology Engineer Examination)
Common Matplotlib (Pyplot) Code Examples
Summary of frequently used dotnet commands
Linux Network Management Commands (nmcli and nmtui)
How to Japanese the Linux Prompt
How to change the Linux prompt to Japanese
How to install pyenv and Python on Ubuntu (including WSL2)
How to install .NET on Ubuntu (including WSL2)
How to expose a server on WSL2 to the LAN using SSH tunneling
Implementing a right-click menu with JavaScript, HTML, and CSS
Installation Guide for rbenv (WSL2 / Ubuntu)
plink
Basic Information Database Summary

2023

Public Key Authentication and SSH
Mastering CSS Grid
USB 3 and Type-C explained
3 Recommended Power Strips for Your Remote Work (Work-from-Home) Environment
Windows App SDK (WinUI3) Button Component and Samples
How to use icons with MenuFlyoutItem in Windows App SDK (Microsoft.UI.Xaml.Controls, WinUI3)
My Number Card (Myna Card) - What Have I Used It For?
Getting Started with Poetry: A Python Package Manager
About My Personal Site
Function to return MD5 (string) from string (C#)

2022

CUDA Grid, Block, and Thread Dimensions and Notes
Generating Random Numbers in Rust
My Current PC Environment Summary
IT Passport Alphabet Summary
Git Notes
JavaScript Notes
Installing Docker on Ubuntu
cublas Usage Notes
How to Create a Custom Gem
How to Create a Custom Linux Distribution Based on Ubuntu
Install Firefox Build
Configure the Dock using gsettings on Ubuntu
What is SSHA generated by slappaasswd in OpenLDAP
Migration of Blog Environment
Detecting extreme values in Python
Handling 2D arrays in C

2021

Troubleshooting "Got bad result from install script." error in Visual Studio Code
Implementation of NMF (HALS)
Setting up a DNS server in WSL2
When nokogiri cannot be installed under brew
Windows OpenSSH Permission denied issue
Installing Powermline on Termux
SSH to termux
Disable Password Authentication in OpenSSH on Windows
SSH Tunnel
How to Install Powerline
Avoid using delay() in Arduino
Setting up a Raspberry Pi without a monitor
Troubleshooting CGI not working with Ruby installed via rbenv on Webrick
How to create a gem
Displaying Images in the Terminal
Applying a Bilateral Filter with ImageMagick
Euclidean Algorithm in Bash
Installing ImageMagick (Ubuntu)
Denoising with a Gaussian Filter (Python / Scipy)
Installing and Configuring Jupyter Lab
Installing and Configuring Pyenv
Dot product with Numo::NArray
era.js
Useful JavaScript Tricks
How to Create an Icon (.ico)
Creating an Electron App
Chart.js Usage Notes
How to make Ruby
Creating a DLL and compiling with C
Generating Realistic Terrain in Unity
Soldering a PCB Made with Acetone Transfer
Making Printed Circuit Boards with Acetone Transfer

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