Posted inLinux
Mastering ss and ip Commands for Advanced Linux Network Troubleshooting
Ditch the deprecated netstat and ifconfig. This guide covers how to use ss and ip for high-performance Linux network troubleshooting and socket analysis.
Posted inLinux
Nix on Ubuntu and Debian: Multi-Version Software and Atomic Rollbacks
Ditch dependency conflicts on Ubuntu and Debian. Learn how to use the Nix Package Manager for side-by-side software versions, non-root installs, and instant rollbacks.
Posted inLinux
Modern Linux User Management with systemd-homed: Encryption, Quotas, and Portability
Ditch traditional /etc/passwd management for systemd-homed. Learn to configure encrypted, portable user accounts and dynamic disk quotas on modern Linux systems.
Posted inLinux
Stop Guessing: Automate Linux Performance with Tuned Profiles
Stop manual sysctl hacking. This guide shows you how to use Tuned to automate Linux performance for databases, web servers, and virtualization with real-world examples and custom profiles.
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Linux Ftrace: Diagnosing Kernel Latency Without the Strace Overhead
Master Ftrace, the Linux kernel's built-in tracer, to solve production latency. Learn function graphing, PID filtering, and how to interpret microsecond-level bottlenecks with minimal overhead.
Posted inLinux
Stop the Lag: High-Performance Remote Dev with Mutagen and Linux via SSH
Eliminate remote development lag. This guide shows you how to use Mutagen to achieve sub-100ms code synchronization between your local IDE and Linux servers over SSH.
Posted inLinux
Mastering udev Rules: Fix Shifting USB Names and Automate Linux Hardware
Tired of your Linux device names changing after every reboot? Learn how to write udev rules to create persistent symlinks, automate hardware scripts, and manage USB permissions like a pro.
Posted inLinux
Stop Hardcoding SMTP: Set Up a Postfix Mail Relay for Linux Alerts
Learn how to configure Postfix as a send-only mail relay on Linux. This guide covers installation, security hardening, and address rewriting to ensure your system alerts and Cron jobs deliver emails reliably.
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Locking Down SFTP: A Field Guide to Chroot Jails on Linux
Isolate SFTP users and prevent lateral movement. This production-ready guide walks you through OpenSSH Chroot Jails, strict permission mapping, and monitoring strategies.
Posted inLinux
Real-Time File System Monitoring with inotifywait and incron on Linux: Auto-Trigger Scripts on File Events
Learn how to use inotifywait and incron to monitor Linux filesystem changes in real time and automatically trigger shell scripts when files are created, modified, or deleted. Includes practical examples for upload processing, config reloading, and debouncing rapid events.