linux

Linux 7.3 Brings Performance Improvements Across the Kernel

Faster filesystems, smarter CPU scheduling and substantial latency reductions are among the improvements now being tested in Linux 7.3.

Sep 3 • TRÄW🤟

Kubernetes Gets More Serious About Resilience, Debian Makes Its AI Decision, and Linux 7.3 Enters Testing

Three developments stood out this week: Kubernetes 1.37 introduced meaningful changes to control-plane resilience and workload identity, Debian decided…

Aug 31 • TRÄW🤟

First Steps With Linux — Now in Paperback

It took longer than I expected, but the paperback is finally here.

Jul 24 • TRÄW🤟

Spin Up Linux Virtual Machines Quickly with KVM Using Cloud Images

When most people start with virtualization, they reach for tools like VirtualBox or VMware.

Mar 31 • TRÄW🤟

A Thank You to My Paid Subscribers

Over the past months, I’ve been working deeply on something significant.

Feb 22 • TRÄW🤟

13 Destructive Linux Commands Every User Should Know (And Avoid)

Linux gives you powerful tools, but with that power comes risk.

Jan 18 • TRÄW🤟

Part 4: SSH Tunnels Deep Dive - SSH as a SOCKS Proxy

By this point, we’ve already seen how SSH can forward traffic to a specific port or even through another internal host.

Dec 19, 2025 • TRÄW🤟

Part 2: SSH Tunnels Deep Dive - Remote Port Forwarding

In the previous part, we walked through local port forwarding and saw how an SSH tunnel can give your machine a private path into a service running on…

Dec 2, 2025 • TRÄW🤟

Part 1: SSH Tunnels Deep Dive - Local Port Forwarding

Most people only use SSH for logging into a remote machine, and they never look beyond that.

Dec 1, 2025 • TRÄW🤟

Part 3: Containers Are Just Linux Processes

In the previous part, we explored how PID namespaces isolate process trees, allowing each container to have its own “init” process and private view of…

Nov 4, 2025 • TRÄW🤟

Part 2: Linux Namespaces - PID Namespaces

Process Isolation

Nov 1, 2025 • TRÄW🤟

Part 1: What Are Linux Namespaces

On a normal Linux system, everything seems to live in one big shared space.

Oct 29, 2025 • TRÄW🤟

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