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48-Hour Field Notes: Exit Code 137, a Zero-Byte Output File, and the Pipeline That Swallowed Both

48-Hour Field Notes: Exit Code 137, a Zero-Byte Output File, and the Pipeline That Swallowed Both

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5 min read
The Smallest Claude Client Is a Shell Script

The Smallest Claude Client Is a Shell Script

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6 min read
Why Did ls Sort clip_10 Before clip_1? Three Orders for One Folder of Numbered Clips

Why Did ls Sort clip_10 Before clip_1? Three Orders for One Folder of Numbered Clips

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8 min read
Save JSON from a cron job or GitHub Action

Save JSON from a cron job or GitHub Action

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8 min read
A tiny script to track how many words I write per day

A tiny script to track how many words I write per day

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3 min read
My photo.jpg Was a 29-Byte HTML Page: Validating Downloaded Images Before They Reach Production

My photo.jpg Was a 29-Byte HTML Page: Validating Downloaded Images Before They Reach Production

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6 min read
find -mtime +7 Keeps Eight Days: Testing a Cleanup Job for a Folder of Camera Clips Before It Deletes

find -mtime +7 Keeps Eight Days: Testing a Cleanup Job for a Folder of Camera Clips Before It Deletes

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9 min read
Letter to Last-Tuesday-Me: The Baseline Probe I Skipped on a Free Cloud Box

Letter to Last-Tuesday-Me: The Baseline Probe I Skipped on a Free Cloud Box

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5 min read
Stop Treating Your ~/.bashrc Like a Junk Drawer — Meet aliashub 🎨

Stop Treating Your ~/.bashrc Like a Junk Drawer — Meet aliashub 🎨

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4 min read
Notes on the tar + ssh pipe technique

Notes on the tar + ssh pipe technique

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2 min read
Why git branch Can Pass && After an Empty Command Substitution

Why git branch Can Pass && After an Empty Command Substitution

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3 min read
My Machine Has No mail Command. That's Where Most Disk Alerts Die.

My Machine Has No mail Command. That's Where Most Disk Alerts Die.

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4 min read
Undo One Bad Turn From Claude Code Without Losing the Ten Good Ones

Undo One Bad Turn From Claude Code Without Losing the Ten Good Ones

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11 min read
Automating Bash Scripts on Linux Using Cron and Systemd

Automating Bash Scripts on Linux Using Cron and Systemd

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5 min read
cronlock: stop overlapping cron jobs with flock (plus timeout and failure webhooks)

cronlock: stop overlapping cron jobs with flock (plus timeout and failure webhooks)

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4 min read
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