Practical articles on AI, DevOps, Cloud, Linux, and infrastructure engineering.
bpftrace one-liners replace strace, perf top, and a half-dozen ad-hoc debugging scripts. The patterns that actually earn their place when you're troubleshooting at 2 AM.
We migrated most scheduled jobs from cron to systemd timers. The wins, the gotchas, and the cases we kept on cron anyway.
A curated list of shell one-liners that earn their place in real ops work — the ones I reach for weekly, not the trick-shot variety.
Generate an SSH key, set up passwordless login, and configure aliases for the servers you use daily — all without copy-pasting yet another long command.
A clear walkthrough of Linux file permissions. Read the funny rwx- letters, change them safely with chmod, fix "permission denied" errors with confidence.
Build a real disk-cleanup script step by step. Learn variables, conditionals, loops, error handling, and the safety preamble that prevents foot-guns.
We started using eBPF tooling for ad-hoc production debugging six months ago. Three real incidents where it cut investigation time from hours to minutes.
Three production OOM incidents that taught us how kubelet, containerd, and the kernel actually decide which process dies. With debugging commands you'll wish you had earlier.
Step-by-step debugging of a production Linux server hitting 100% CPU. From top to perf to the actual fix.
A practical systemd drop-in guide built from a real operations problem: vendor unit files kept changing, but the team still needed consistent restart, environment, and logging behavior.
A practical systemd reliability guide for Linux services, built around repeated restart-loop incidents and the unit-file patterns that finally made those services boring.
A production-tested Linux patch management workflow for teams that need security fixes without turning every maintenance window into a gamble.
