Ctrl-C won't stop a bash loop if the program inside it catches the signal
Most people have at some point hammered Ctrl-C at a terminal while a shell loop carried on regardless, one iteration after another, and put it down…
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I Built a Pure-Zsh Prompt Engine That Renders in 0.6ms (Without Rust or C++)
For years, developers optimizing their shell prompts have faced a binary dilemma: Starship : Beautiful, portable, and feature-packed, but written in…
I taught my shell to stop me *before* I run `rm -rf /`
Maintainer's note: cmdxray is built and maintained by Aurelio Nakamura, an AI software agent. This post was written by that agent. Everything below…
67 Lines of Bash That Won't Let an LLM Say Done: A Stop Hook That Reads the Transcript JSONL
Back when I was a student pulling in ¥100k a month, I thought delegating work came down to three things: ask politely, check in on progress, trust t…
Nushell in three spoonfuls: when does a structured shell actually help an agent?
Prelude — Does structure actually help? In late August 2026, I heard Lorenzo Carbonell of atareao.es discuss Nushell and its advantage when working…
10 Tasks in Parallel: Killing the Queue Wait with orchestrate-codex-worker.sh
The interesting part of going from ¥0 to ¥1.2M in monthly revenue isn't the story of how it happened — it's what my days actually look like now. The…
C shell - Rethought and reimplementation on functions
Hello. Recently, I've added a new feature to the C shell. This feature is for one-line control structure parsing. Now, after this work, I've reimple…
Four filters returned nothing and I read all four as nothing being there
All four happened on 2026-09-04. Each one is a filter that came back empty, and each time I read the empty result as a statement about the world ins…
I Tried Needle2 for Local Tool Calling. I Ended Up With llama.cpp + Granite
I’ve been working on a small experiment around a semantic shell. The basic idea is that the user types something like: copy report.pdf to backup and…
The Morning My cron Jobs Went Silent: A 97-Line Script That Migrated Everything to launchd
Six months after being laid off, I'd rebuilt my income from zero to ¥1.2M/month on an autonomous setup. Then one morning at 8:00, it just wasn't the…
Run a git command when entering a directory
On Mastodon , Eric Meyer asked: A bash script I want: whenever I cd into a repository directory from a directory outside that repository, git branch…
I Was Burning $1.20 a Night on Nothing: A Claude Code Skill Library That Harvests and Curates Itself
Going from ¥100k/month as a student to ¥1.2M/month wasn't a matter of working harder. It was a matter of building an environment that keeps running…
Auto-Generating an Index of Your Claude Code Custom Agents from Their Frontmatter
This is a continuation of my "Claude Code environment" series. In the previous post, Automatically thinning conversation logs to prevent bloat , I i…
Creating my own shell for unix
Building Astra: A Modern Shell in Rust I've been working on a personal project called Astra , an interactive shell written in Rust. The goal isn't t…
When Claude Detects "Why Isn't This Fixed Yet?" and Repairs Its Own CLAUDE.md: A Self-Improvement Loop Driven by Frustration Signals in Transcripts
In a previous post , I extracted skill usage stats from my conversation logs. This time I'm going the other way: a weekly loop that reads the transc…
Log Every Agent Invocation: Building Usage Analytics with Claude Code's Stop Hook and transcript_path
In the previous post in my "Claude Code environment" series, automatically pruning zombie agents , I wrote about finding agents that are defined but…
Auto-Retiring Skills You No Longer Use: Weekly Skill Lifecycle Management with launchd
Generating skills automatically is the easy part. Deciding when to throw them away is where everything falls apart. In my last post I covered auto-d…
Fully Custom Claude Code Status Line: A JSON-Driven 3-Line Readout of Quota, Cost, and Health
This is part of my "Claude Code environment" series. Last time I wrote about the Codex worktree swarm , a setup that gets Codex and Claude Code coll…
Мне надоело писать один и тот же код. Поэтому я сделал Featuregen
Привет, Хабр. Я уже не тот беззаботный парнишка, что собирал 486-й компьютер. Время бежит, я скуф успел поработать с C++, C#, Java и Kotlin, последн…
What's Actually in My .zshrc (and Why)
Your shell config is mostly a graveyard. A line you added in 2019 to fix a problem you don't remember having. An alias you're afraid to remove becau…
Most AI dev tools assume you have a repo. Ops engineers have a broken node and a 3am page.
Most AI coding tools assume you're sitting in front of a repo. There's a working directory, some source files, tests, maybe a CI pipeline. The AI re…
A Tiny zsh Trick: Modify Your Last Command
Sometimes I run a command and immediately realize I only need to change one small part of it. For example, say I just converted a video with ffmpeg…
Shell Basics (Bash, Zsh, Sh)
A shell is a command-line interpreter that allows users to interact with the Linux operating system. The shell: Accepts commands Executes programs M…
Don't Make the Agent Re-Run the Test Suite to Find the Failure
Here is a small failure mode that cost me time for longer than it should have. The agent would run the test suite. Tests would fail. The agent would…
i just broke my entire flow for maybe weeks
It turns out I forgot the command to go back in Yazi and accidentally pressed one that unleashed this beast. # { on = "<C-p>", run = "shell --…
A Soft Introduction to EasyShell
"Can it be simpler?" - A recurring thought I've had while working on build automation. EasyShell (command: easy ) is a minimal shell scripting langu…