Technical Pillar · 12 verified guides

Linux & DevOps

Hands-on Linux system administration, terminal workflows, and developer setups.

Lab Tested

Ubuntu 24.04 LTS Kernel 6.8 Tested · Docker Rootless No Sudo Required · UFW & SSH Production Hardening · PHP 8.4 & Composer Clean CLI Toolchain · Zsh & Oh-My-Zsh Developer Workflows · NVM Node.js Multi-Version Management · Restic & Systemd Automated Encrypted Backups · Fail2ban Automated IP Jails · Ubuntu 24.04 LTS Kernel 6.8 Tested · Docker Rootless No Sudo Required · UFW & SSH Production Hardening · PHP 8.4 & Composer Clean CLI Toolchain · Zsh & Oh-My-Zsh Developer Workflows · NVM Node.js Multi-Version Management · Restic & Systemd Automated Encrypted Backups · Fail2ban Automated IP Jails ·

Linux & DevOps

Hardening SSH and Configuring UFW Firewall on Ubuntu 24.04 LTS

A checklist and implementation guide for securing an Ubuntu server: Ed25519 keys, password authentication disablement, and UFW rate limiting.

Zaisha

Verified 3 min

Linux & DevOps

Hardening systemd Services with Sandboxing and Capabilities in Linux

Turn systemd into a zero-overhead container sandbox to isolate web services, background bots, and database daemons from system compromise.

Zaisha

Verified 3 min

Linux & DevOps

Automating Scheduled Server Backups with Restic and Systemd Timers

A production guide to configuring encrypted, deduplicated backups on Linux with Restic, managed by native systemd service timers.

Zaisha

Verified 3 min

Linux & DevOps

Managing Multiple Node.js Versions on Linux Using NVM

Learn how to install and manage Node.js versions on Linux with NVM, setting project defaults and avoiding npm permission issues.

Zaisha

Verified 3 min

Linux & DevOps

Setting Up a Clean PHP 8.4 and Composer Dev Environment on Ubuntu

Step-by-step setup guide for PHP 8.4 on Ubuntu Linux with essential extensions, OPcache tuning, and the latest Composer binary.

Zaisha

Verified 3 min

Linux & DevOps

Configuring zRAM for Low-Latency Memory Management and Swap on Linux Workstations

Eliminate disk thrashing and boost workstation responsiveness under heavy compilations and AI workloads using compressed zRAM swap.

Zaisha

Verified 3 min

Linux & DevOps

Essential Zsh and Oh-My-Zsh Plugins for Linux Developers

A curated list of high-impact Zsh plugins for Ubuntu and Debian developers, including autosuggestions, syntax highlighting, and performance tips.

Zaisha

Verified 3 min

Linux & DevOps

Setting Up a WireGuard Site-to-Site VPN on Ubuntu 24.04 and Debian 12

Establish an encrypted site-to-site network tunnel between Linux servers using modern WireGuard kernel modules.

Zaisha

Verified 3 min

Linux & DevOps

How to Fix Docker Permission Denied on Ubuntu Without Sudo

A clean, tested solution to run Docker commands on Ubuntu without prefixing sudo, fixing unix socket permission errors safely.

Zaisha

Verified 3 min

Linux & DevOps

Configuring Nginx with HTTP/3 QUIC, TLS 1.3, and Brotli Compression on Ubuntu

Upgrade your web server reverse proxy to HTTP/3 QUIC and Brotli to reduce page load latency and packet loss recovery times.

Zaisha

Verified 3 min

Linux & DevOps

Advanced Fail2ban Rules: Protecting SSH, Nginx, and WordPress from Brute Force

Configure aggressive Fail2ban jails with recidive exponential bans to safeguard critical web servers and SSH access points.

Zaisha

Verified 3 min

Linux & DevOps

Automating Btrfs Snapshots and Remote Backups with btrbk on Linux

Implement atomic local snapshots and secure remote offsite backup replication with zero downtime using Btrfs and btrbk.

Zaisha

Verified 3 min