Bash

Slow Loris attacks tie up web server sockets with trickling requests until legitimate traffic is starved. This post walks through configuring Apache mod_qos to detect and block those connections automatically.

A quick procedure to verify and correct a time mismatch between the host system clock and MySQL’s internal NOW() function, using a simple service restart.

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.

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.

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.

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.