how to 🪄

rclone: One Tool to Sync Them All — Google Drive, Nextcloud & More.

rclone brings cloud storage into the Linux command line, making it easy to copy, sync, automate, and manage files across services such as Google Drive and self-hosted Nextcloud.

how to 🪄

/var/run/reboot-required —(updated)

In Linux, key components like the kernel and libraries remain active in memory during operation. After updates, rebooting is essential to ensure processes use the latest versions. Without a reboot, outdated components can cause instability, security risks, and performance issues.

how to 🪄

SSH Port Forwarding ⤳ aka SSH Tunneling — Remote Port Forwarding (Part 2)

Learn how SSH remote port forwarding securely makes local services accessible from remote systems. Explore ssh -R, reverse SSH tunnels, NAT and firewall traversal, GatewayPorts, security considerations, and practical examples.

linux 🐧

Locked Files in Linux: A Practical Guide.

Linux uses file locks to prevent multiple processes from interfering with the same resource. Understanding locks helps you diagnose errors like APT’s “Could not get lock” message safely, without deleting lock files and risking system problems.

NGINX

What Does HTTP/3 Mean for NGINX?

HTTP/3 changes how NGINX handles web traffic. QUIC replaces TCP with UDP as its underlying transport, introducing a different connection and worker model while allowing HTTP/2 and HTTP/3 to run side by side.

NGINX

NGINX: HTTP/2 vs HTTP/3 — What Actually Changes Under the Hood?

HTTP/2 and HTTP/3 both improve web performance, but use fundamentally different transports. HTTP/2 runs over TCP, while HTTP/3 uses QUIC over UDP—changing connection handling, packet processing, streams, congestion control, and NGINX worker behavior.

SNUB podcast 🎙️

SNUB Podcast —Dangerous Linux: Commands That Can Break Everything.

Welcome to the SNUB Podcast — an exciting way to deepen your Linux knowledge and skills! Each episode dives into key concepts, practical tips, and the latest trends in Linux.

NGINX

NGINX sub_filter: Modify Responses on the Fly.

NGINX isn’t only a reverse proxy. With sub_filter, it can transform upstream HTML responses on the fly. Letting you inject CSS, modify content, or customize applications without touching their original files.

tips

Stop Scrolling: Use grep + nano to Jump Straight to the Problem.

Linux Text Navigation Workflow: grep + nano for fast, precise editing. Search recursively with grep -R, pinpoint exact lines with grep -n, then jump directly to them with nano +N. Ideal for configs, logs, CMS themes, and production debugging.

docker 🐳

Docker Explained: Why Modern Infrastructure Runs on Containers.

Docker is a containerization platform that packages applications with all theirs dependencies into lightweight, portable units called containers. It ensures consistent execution across environments—from local machines to production servers.

vpn💄🕸️

VPN Best Practice: Always Use a Domain Name.

Using a domain name for your VPN endpoint (WireGuard, OpenVPN, or IPsec) instead of a public IP boosts reliability. DNS ensures clients survive IP changes, eases migrations, supports IPv6, and simplifies management.

how to 🪄

Stream Video Between Two Computers Using FFmpeg (Linux & macOS).

Stream video across your network in real time with FFmpeg and FFplay. This guide covers point-to-point streaming over UDP, TCP, or SSH for Linux and macOS without media servers. Note: The receiver requires an active graphical display (X11/Wayland). For full options, run ffmpeg -h.

linux 🐧

Hashing, Salting, and Password Storage on Linux.

Every time you check your email, connect to a server through SSH, access your banking application, or make an online purchase, you are asked to prove your identity with a password. That small string of characters is often the first barrier protecting your digital identity.

macOS

Installing spotDL on macOS.

Install spotDL on macOS using pipx, fix YouTube Music lookup errors, and understand why Spotify downloads sometimes fail. Learn setup, troubleshooting, and reliable workflows for converting Spotify links into local audio files.

macOS

Sandboxing vs Docker: Understanding Modern Isolation Models.

Sandboxing and Docker both isolate workloads, but they do it in fundamentally different ways. Sandboxing enforces strict OS-level security boundaries, while Docker relies on shared-kernel isolation using Linux primitives like namespaces and cgroups. That difference defines their security model.

macOS

Using the caffeinate Command to Prevent macOS Sleep.

caffeinate is a macOS command-line utility that prevents the system from sleeping by creating activity assertions. It keeps the Mac awake during tasks, automation, or remote operations, ensuring processes continue uninterrupted even when the system would normally idle into sleep.

how to 🪄

rsync Guide — Beginner vs Advanced Usage.

rsync doesn’t just copy files — it synchronizes state. It transfers only what changed, resumes interrupted jobs safely, and avoids duplicates by design. Rerun the same command and it continues exactly where it stopped, converging both sides efficiently.

security 🦾🦿

Jump Servers (Bastion Host)

A jump server, or bastion host, is a hardened gateway for accessing internal systems. Rather than connecting directly, you first log into this secure host and then “jump” to other machines. This setup enhances security, centralizes access control, and allows detailed session logging.

how to 🪄

Advanced Linux Mount Management with systemd.

Learn how to structure Linux storage with systemd mount units and bind mounts. Understand physical vs logical mounts, improve backup automation, and build a clean storage layout using /mnt/ssd_1T and /mnt/backups.

shell 🛠️

Controlled Countdown with Bash `for` Loop.

A simple Bash loop can turn a disruptive command into a controlled sequence. Using a for loop, you can implement a visible countdown that informs users and adds operational clarity before executing actions such as a system restart.

how to 🪄

Install & Use Glances on Ubuntu Server via GitHub (pipx) with FastAPI Web UI & systemd Service.

Familiar with top and htop? If you want a more powerful, flexible, and user-friendly system monitor, Glances is a strong upgrade—offering deeper insights with minimal overhead. 🚀

how to 🪄

`sudo touch /forcefsck` (Ubuntu Server)

Need to force a filesystem check on your Linux server at boot? Use `sudo touch /forcefsck` to trigger fsck on the root partition—even if it seems clean. Perfect for Ubuntu Server with ext filesystems after crashes or power loss.

how to 🪄

SSH Port Forwarding ⤳ aka SSH Tunneling — Local Port Forwarding (Part 1)

Learn how SSH local port forwarding securely tunnels TCP traffic from your local machine to remote services. Explore `ssh -L`, localhost, bind addresses, multiple port forwards, bastion hosts, and practical real-world examples.

how to 🪄

Ansible for the Modern Sysadmin: Installation, Configuration,Vaults and Automation.

Ansible is a powerful automation and orchestration tool that lets you manage servers consistently and securely over SSH. This guide explains what Ansible is, why it matters, and how to structure a clean, real-world Ansible project.

ethical hacking 🤖

Reverse Shell with Netcat.

Learn how ethical hackers use Netcat to create reverse shells for testing security vulnerabilities. Understand how these attacks work, the risks they pose, and the defensive measures needed to mitigate them. Stay ahead in cybersecurity by mastering ethical hacking techniques.