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26 posts
A complete walkthrough installing and running a graphical Linux application directly on your Windows desktop — no separate X server setup, no remote desktop session, just a window that opens like any other.
Before WSL let Windows run real Linux binaries, Microsoft tried and abandoned a different compatibility project entirely. Here's the actual path from that cancellation to today's tightly-integrated WSL2.
WSL2 doesn't borrow a distro's kernel — Microsoft maintains its own fork, patched specifically for the virtualized environment WSL2 runs in, and ships it independently of both Windows and any Linux distro's own kernel.
How SELinux's label-based policy and AppArmor's path-based profiles both extend Linux's discretionary permission model, and how to work with each day to day.
A minimal but complete walkthrough of writing, building, loading, and communicating with a Linux kernel module.
How procfs and sysfs expose live kernel state as ordinary files, and the specific paths worth knowing for debugging a running system.
How Debian's APT, Fedora's DNF, and Arch's Pacman differ in dependency resolution, package format, and update philosophy.
How eBPF lets sandboxed, verified programs run inside the kernel, and why that changed what's possible for tracing, networking, and security tooling.
How the VFS layer lets ext4, XFS, Btrfs, NFS, and procfs all answer to the same read/write/open calls.
A stage-by-stage tour from power-on firmware through GRUB, the kernel, initramfs, and systemd reaching a running system.
How cgroup v2's unified hierarchy replaces v1's tangled controller mounts, and how to read and write limits directly through the filesystem.
How each of the Linux kernel's namespace types isolates a specific global resource, and why containers are just processes with a curated set of them.
How systemd's unit model replaced sequential init scripts with declarative, dependency-driven service management.
How WSL2 differs fundamentally from WSL1's syscall translation, running an actual Linux kernel in a lightweight, tightly-integrated VM.
The real story behind Linus Torvalds' 1991 Usenet post, what it actually said, and how a self-described hobby project became the kernel running most of the internet.
Released December 11, 2022, Linux 6.1 became the first kernel version to officially accept Rust as a second language for kernel development, alongside C.
Linux 5.0 shipped March 3, 2019, and Linus Torvalds was explicit that the jump from 4.x to 5.0 didn't signal any major architectural change.
August 25, 2021 marked 30 years since Linus Torvalds' original Usenet announcement, prompting a wave of retrospectives on how far the kernel had come.
First revealed via Windows 10 Insider Preview Build 14316 on April 6, 2016, WSL let Windows run real Linux binaries for the first time.
df says you have plenty of free space, but every write fails with ENOSPC. Two completely different root causes look identical from the outside — here's how to tell them apart.
Your machine boots straight into a minimal grub rescue prompt instead of Linux. Here's how to get back to a working bootloader without reinstalling the OS.
A service won't start, logs are unhelpful, and the files look correctly owned. SELinux and AppArmor enforce a second, invisible layer of permissions — here's how to check it.
A complete, working example converting a nightly backup cron job into a properly supervised systemd timer, with logging and failure visibility cron never gave you.
A complete, working nftables ruleset for a typical server — default-deny inbound, stateful connection tracking, and a handful of explicit allowed services.
A complete walkthrough generating an SSH key pair, deploying it correctly, and disabling password authentication safely — without locking yourself out.
A practical toolkit for watching CPU, memory, disk, and network usage live — going beyond top to actually find what's causing a resource problem.