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Lily6d ago • 20 min read
Which Skill Is Quietly Burning Your Tokens? Find Out From transcript.jsonl
Your monthly Claude Code bill went up 20%. You know that much. What you don't know is which Skill di...
#automation#claudecode#python#bash
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Igor5d ago • 7 min read
Meet Watchdog: A Small, Safe Bash Watchdog for Linux Services
A service does not have to be large to become operationally important. A small API behind a reverse....
#devops#linux#monitoring#bash
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LilyAug 23, 2026 • 21 min read
Rate Limits Cost Me a Whole Night of Work — Here's the 46-Line Script That Fixed It
Every heavy Claude Code user eventually hits the wall: the 5-hour rate limit block. I'm Lily. I los...
#automation#bash#claude#productivity
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shahabAug 23, 2026 • 6 min read
How to Get Notified When Claude Code Finishes a Task
Claude Code hooks can play a sound when a task finishes. The hard part is teaching it to stay quiet ...
#ai#bash#productivity#tutorial
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Syed Anzar5d ago • 7 min read
Your Cron Job Is Lying to You: A Dependency-Free Watchdog for Silent Failures
Three dependency-free guards that stop cron jobs from silently failing: pipefail, unbuffered output,...
#devops#bash#python#automation
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RulestackAug 24, 2026 • 3 min read
The test gate that passed a failing build: a postmortem on pipes, exit codes, and one shell idiom to ban
A few days ago our CI went red on a push that our commit gate said was green. The gate wasn't flaky....
#testing#bash#ci#devops
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LilyAug 24, 2026 • 22 min read
Four Alarm Slots, Three Failure Modes: Building a Nightly Drain That Survives Sleep, Races, and Timeouts
Every night my Mac quietly rewrites my long-term memory. Not metaphorically — a shell script drains....
#automation#bash#macos#claude
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Lily5d ago • 22 min read
5 Days of Silent Failures: A launchd Locale Bug That Was Hiding in 5 Repos
Everyone has met the bug that only shows up in production. This one was its exact mirror image: it.....
#bash#automation#macos#debugging
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Blake YangAug 22, 2026 • 5 min read
The Exit Code That Lied: Debugging a Silent Failure on a Free Server
A scheduled sync job ran every hour on a small free server, and its logs claimed success after every...
#debugging#bash#python#ai
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LilyAug 23, 2026 • 21 min read
Your Automation Dies Quietly: A Weekly Revenue Gate That Caught One Line Dropping From 14 Files to 0
A layoff notice doesn't stop the Claude API invoice — that still lands next month, right on schedule...
#automation#bash#python#productivity
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Shinji Ito5d ago • 3 min read
Building a Unix Shell from First Principles in Rust
I’ve been working on a project called Whelk, a Unix shell built from first principles in Rust. The....
#rust#systems#linux#bash
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Lily5d ago • 22 min read
Our Social Posting Automation Was Dead for 14 Days and the Monitoring Never Noticed
A ¥1.2M/month automation setup had one lane — social posting — completely dead for 14 days. And the...
#automation#bash#devops#monitoring
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LilyAug 22, 2026 • 22 min read
My Cost Monitor Said $234 When the Real Bill Was $48. Then set -e Made It Go Silent for a Week.
A monitoring script that dies quietly is worse than no monitoring at all. Mine proved it twice: firs...
#bash#automation#monitoring#devops
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LilyAug 22, 2026 • 22 min read
The 4,000-Token Tax: Auto-Disabling Claude Code Plugins You Haven't Touched in 30 Days
Hitting ¥1.2M/month taught me something I didn't expect: keeping the environment healthy has to come...
#automation#claudecode#bash#macos
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Lily5d ago • 24 min read
Why My Nightly Ingest Stalled for 3 Days — and How Splitting One Task Into Sub-Steps Fixed It
I went from ¥100k/month as a university student, to ¥600k/month juggling multiple gigs, to exactly.....
#automation#bash#macos#claudecode
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ilya mozerov6d ago • 6 min read
Tab is whitespace, so your TSV parser is not one
TSV is the format shell speaks. jq -r @tsv, git for-each-ref --format, ps --format, anything piped.....
#bash#linux#shell#devops
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Lily6d ago • 24 min read
A Blank Dashboard and a Fake 2.5M-Token Reading: Building a Token Fuel Gauge for Claude Code
A side hustle I started in college went from ¥100k a month to ¥600k once I was running several at th...
#claudecode#automation#bash#python
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Schiff HeimlichAug 21, 2026 • 2 min read
Bash Parameter Expansion: Two Quirks That Slip Through Code Reviews
Bash Parameter Expansion: Two Quirks That Slip Through Code Reviews Here's a pair of bash...
#bash#programming#software
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Usman Tahir Qureshi5d ago • 2 min read
Blue-green deployment that left the old environment running for weeks, doubling infrastructure cost
The deploy worked. The bill doubled. The blue-green cutover went perfectly. Traffic shifted to...
#aws#devops#finops#bash
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tinyproofAug 24, 2026 • 4 min read
A retry loop that couldn't tell the checker crashed from the task not being done
A retry loop that couldn't tell "the checker crashed" from "the task isn't done" I run a...
#bash#retry#debugging#automation
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Connor DAug 24, 2026 • 2 min read
I let a domain expire once. Now I check them all with a script.
A few years back I let a domain lapse. Not a throwaway one either. It was live, had traffic, and I.....
#bash#domains#dns#webdev
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Garseta YusufAug 24, 2026 • 3 min read
Automating Oracle's Always-Free ARM Instance (So You Don't Have To Babysit It)
As a developer who likes free compute, I frequently found myself caught in a tedious cycle: trying t...
#devops#oraclecloud#bash#automation
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Mauricio VillegasAug 20, 2026 • 12 min read
Tab completion, without writing a completion script
The first post derived a whole command line interface from a client class, and the second turned it....
#python#cli#bash#shtab
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kandz4d ago • 3 min read
Writing Secure Shell Scripts: A Guide to Auditing and Sanitizing Unsafe Bash Code
Shell scripting remains the connective tissue of modern deployment pipelines, system administration,...
#bash#devops#security#shell
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