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Bourne Again Shell

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My DNS Check Script Said OK for 41 of 41 Hostnames. 22 of Them Don't Exist.

My DNS Check Script Said OK for 41 of 41 Hostnames. 22 of Them Don't Exist.

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8 min read
Three bash guards we actually ran: timeout, flock, and pipefail

Three bash guards we actually ran: timeout, flock, and pipefail

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2 min read
A tiny tripwire so your AI agent (or you) notices a wipe before doing more damage

A tiny tripwire so your AI agent (or you) notices a wipe before doing more damage

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3 min read
Restart=always Did Nothing. The Service Never Exited.

Restart=always Did Nothing. The Service Never Exited.

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4 min read
timeout Returned 124 After the Job Had Finished Its Work: Testing GNU timeout on a Nightly Clip Script

timeout Returned 124 After the Job Had Finished Its Work: Testing GNU timeout on a Nightly Clip Script

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8 min read
Safe temp files, install modes, checksums, and a quiet curl

Safe temp files, install modes, checksums, and a quiet curl

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2 min read
Why Can't Google Find My New Page? Finding Orphan Pages With curl and Your Sitemap

Why Can't Google Find My New Page? Finding Orphan Pages With curl and Your Sitemap

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5 min read
A free GitHub Action that fails the build on bad cron, broken JSON, or weak headers

A free GitHub Action that fails the build on bad cron, broken JSON, or weak headers

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3 min read
Website Relaunch Without Losing Rankings: Redirect Mapping and a Bash Launch Test

Website Relaunch Without Losing Rankings: Redirect Mapping and a Bash Launch Test

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4 min read
From 21 Minutes to 5 : Parallel Tests With Nothing but xargs

From 21 Minutes to 5 : Parallel Tests With Nothing but xargs

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6 min read
My Claude Code SessionStart hook sent 305k characters. Almost none of it reached the conversation (the cap is 10,000)

My Claude Code SessionStart hook sent 305k characters. Almost none of it reached the conversation (the cap is 10,000)

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8 min read
Your cron job isn't running: 8 causes and a one-line check for each

Your cron job isn't running: 8 causes and a one-line check for each

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3 min read
Exchange Rate API Cheat Sheet: curl and jq Commands

Exchange Rate API Cheat Sheet: curl and jq Commands

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6 min read
How to Convert MOV to MP4 by Re-encoding Only the Audio

How to Convert MOV to MP4 by Re-encoding Only the Audio

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3 min read
Day 25: Service Monitoring Scripts That Cannot Lie to You

Day 25: Service Monitoring Scripts That Cannot Lie to You

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3 min read
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