Linux
Most systemd release writeups lead with the feature count. The more interesting story in systemd 261 is that one of its new features is a defensive control against a class of cloud attack that has been quietly wrecking people for years: the metadata-server token theft that turns one application
Linux
Logs that never leave the machine that made them are logs you lose exactly when you need them. A failed disk, an accidental rm, or an attacker with root, and the records you were about to review are gone. Past a handful of servers it's also just impractical:
Linux
Ubuntu 26.04 keeps Netplan as the default network layer, YAML files under /etc/netplan/, rendered to either systemd-networkd or NetworkManager. Nothing dramatic changed from earlier releases, but a few sharp edges still catch people, and one of them will disconnect you from a remote box mid-SSH if
Linux
Ripping the init system out of a running Linux install is the kind of thing most of us know is possible but never actually do, because PID 1 is the one process you really don't want to get wrong. Daniel Cordova did it anyway — pulling systemd and dropping
Linux
The most maddening thing about regular expressions isn't the syntax — it's that the syntax changes depending on what you run it through. A feature that works in one tool is missing in another, or present but spelled differently. You write a pattern that works perfectly in
Linux
A process with a steady workload shouldn't keep growing its resident memory. When it does, the first question isn't "how much RAM is free." It's "where did allocations stop being released." And on Linux that's rarely obvious from
Linux
The best distro for developers isn't the one topping DistroWatch. It's the one that matches what you build and where it deploys. Pick wrong and you'll spend the first week of every project fighting your own environment instead of writing code — and you'
Linux
The "Address Already in Use" Problem You restart a service, get Address already in use, and now something's squatting on port 8080 that you need to find and kill—without rebooting the whole machine. This happens constantly. The fix is straightforward once you know the commands,
Linux
The 2 AM Debugging Mystery: df Says 80% Full, du Says 50% You're debugging a full disk alert. The df command shows red. The du / output looks totally fine. You run both commands three times, thinking you misread something. The numbers don't match. One of them
Linux
If you live in a Linux terminal but your daily driver is a Windows box, Microsoft just handed you something useful — and a few sharp edges. At Build 2026 they shipped Coreutils for Windows, a native port of the common GNU coreutils commands, built on the Rust-based uutils project.
Linux
Every infrastructure team I've worked with has the same dirty secret. There's a directory somewhere — usually on a shared drive, sometimes in a 1Password vault if the team is feeling responsible — that contains the SSH public keys of everyone who's ever needed access to
Linux
You've Done It: Pasted a Password, Hit Enter, Immediately Panicked You paste a curl command with an API key embedded. You hit Enter. The command works. Then you realize: where did that string just land? Bash saved it. To ~/.bash_history. Which is readable by anyone with access