Luke Hebert
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Welcome to the articles section, where business, technology, and everyday problem-solving meet. You’ll find practical how-tos, troubleshooting notes from the trenches, and the occasional take on whatever’s happening in the world. Some posts will save you time, some will spark ideas, and a few will just be me thinking out loud. Grab a coffee and dig in.

The Inode Rescue: Finding Lost Souls with Printf January 24, 2022

The Inode Rescue: Finding Lost Souls with Printf

A quick reference for GNU find -printf format switches, with practical examples for inspecting file ownership, size, and mode. Includes a use case for auditing files recovered into lost+found after a filesystem check.
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Understanding Linux Permissions January 24, 2022

Understanding Linux Permissions

A practical breakdown of how Linux file permissions work, including the symbolic and numeric chmod methods, special bits like setuid and sticky, and how permissions differ between files and directories.
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Understanding Load Averages January 24, 2022

Understanding Load Averages

A practical guide to reading Linux load averages, with a traffic analogy that makes the numbers click. Learn the thresholds that matter, how multi-core systems change the math, and which of the three averages to watch.
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Unmounted Disk Labels January 24, 2022

Unmounted Disk Labels

A quick bash one-liner that lists every disk label present in /dev/disk/by-label/ that is not currently mounted, so you can spot forgotten or orphaned volumes at a glance.
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Updating VM Memory Usage Configs January 24, 2022

Updating VM Memory Usage Configs

Tune Linux VM memory behavior by adjusting vfs_cache_pressure, dirty_ratio, and swappiness to reduce unnecessary swapping and improve I/O throughput.
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User Performance Data on MySQL January 24, 2022

User Performance Data on MySQL

A quick bash one-liner that pulls per-user CPU time, connection counts, and active session details from MySQL’s INFORMATION_SCHEMA and processlist tables.
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