Linux · Windows Server · Unix/BSD
A directory of every OS family this newsletter covers — starting with Linux, top to bottom: fundamentals, advanced administration, and a dedicated troubleshooting runbook for the 3am pages.
Three deep-dives covering Linux from first principles to production incident response.
Filesystem hierarchy, users & permissions, package management, process basics, and shell/scripting — the ground floor every other Linux topic stands on.
systemd internals, kernel & sysctl tuning, namespaces & cgroups (the primitives containers are built on), performance profiling, and LVM/advanced storage.
A runbook, not a tutorial — high load & CPU, memory & OOM, disk & I/O, network issues, and boot/service failures, each with diagnostic commands and root causes.
190 terms across 15 categories, searchable in one place — fundamentals through troubleshooting, plus standalone deep-dive pages for the terms that need one.
Linux is first because it's what most of the Platform Ops stack runs on. These are next.
Where each issue in this series sits. The stack reads bottom to top: the kernel owns the hardware, systemd owns the kernel's services, and everything you type lives in the two layers above that.
A quick preview before you click through.
New to Linux administration? Follow this sequence — each issue assumes the one before it.
Start here even if you've used Linux for years — filesystem hierarchy, permissions, and package management are where sloppy mental models usually hide.
Read Issue #054 → Linux FundamentalsOnce the basics are solid, go under the hood — systemd, kernel tuning, and namespaces/cgroups are the exact primitives Kubernetes and Docker are built on.
Read Issue #055 → Linux AdvancedNow that you understand how the system is built, learn how to diagnose it under fire — high load, OOM, disk exhaustion, network failures, and boot problems.
Read Issue #056 → Linux TroubleshootingKeep this open in a tab. 190 terms across all three issues above (plus more), searchable in one place instead of hunting across articles.
Open Issue #057 → GlossaryOnce the Linux series is complete, the same three-part structure (fundamentals → advanced → troubleshooting) repeats for Windows Server and Unix/BSD.
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