Dec 25, 2025
File Permissions & Ownership in Linux (chmod, chown, chgrp, alias)
How rwx permissions work, numeric vs symbolic chmod, changing ownership with chown/chgrp, and using aliases for quick commands.
#Linux
#Permissions
#CLI
#Security
#DevOps
Read more →
Dec 25, 2025
Mastering Vim: Concepts, Modes, Movement, and Everyday Workflows
A practical deep dive into Vim: modes, movement, editing, registers, macros, search/replace, windows/buffers, and customization.
#Vim
#Editor
#CLI
#Productivity
#Linux
Read more →
Dec 25, 2025
Handy Shell Tools: base64, less, head, tail, and I/O Redirection
How to encode/decode with base64, page through files with less, preview logs with head/tail, and use input/output redirection.
#Linux
#CLI
#Shell
#Basics
Read more →
Dec 25, 2025
OSI Layers and IP Address Classes: A Quick Primer
A clear rundown of the 7 OSI layers and the classic IPv4 address classes.
#Networking
#OSI
#IP
#Fundamentals
Read more →
Dec 25, 2025
File Structure & User Management (With Paths Refresher)
Linux directory layout, absolute vs relative paths, and a quick revision of user management commands like usermod.
#Linux
#File System
#User Management
#CLI
#Paths
Read more →
Dec 25, 2025
Linux User Management: Basics and Core Commands
What accounts and groups are, and how to add/remove users with useradd/adduser, groupadd, and userdel.
#Linux
#User Management
#Admin
#CLI
Read more →
Dec 25, 2025
Understanding Malware Types + Handy FS Tools (tree, ncdu)
What viruses, malware, trojans, spyware, and worms are; a quick note on the GNU project; plus two useful file-system tools: tree and ncdu.
#Security
#Malware
#Linux
#CLI
#Fundamentals
Read more →
Dec 25, 2025
Linux File System & Essential Commands: A Quick Guide
Intro to the Linux file system layout and core commands like ls, pwd, cd, mkdir, touch, cp, mv, echo, wc, rmdir, history, cat.
#Linux
#CLI
#Basics
#DevOps
#Shell
Read more →
Dec 25, 2025
Kernel Basics: How the Linux Kernel Works
What the kernel is, what it does, and how it manages hardware, processes, memory, and IO.
#Kernel
#Linux
#Operating Systems
#Fundamentals
Read more →
Dec 25, 2025
Foundations: Software, DevOps, Containers, Servers, and How Code Flows
A beginner-friendly overview of software types, DevOps, containers, servers, network flow, programs/code/instructions.
#Fundamentals
#DevOps
#Containers
#Networking
#Programming
Read more →
Dec 25, 2025
Dockerfile Syntax: Writing Lean, Secure Images the Right Way
A practical guide to Dockerfile instructions, order, and best practices for small, secure, repeatable images.
#Docker
#Containers
#DevOps
#CI/CD
#Security
Read more →
Dec 25, 2025
Running Commands Inside Docker Containers: Practical Guide
How to exec into containers, run one-off commands, and inspect container state safely.
#Containers
#DevOps
#CI/CD
Read more →
Dec 25, 2025
Dockerfile Instructions: A Practical Cheat Sheet
A concise walkthrough of common Dockerfile instructions—what they do and how to use them safely.
#Docker
#Containers
#DevOps
#CI/CD
Read more →
Dec 25, 2025
Git and DevOps: Integrating Version Control with CI/CD
How Git underpins DevOps workflows and how to wire version control cleanly into your CI/CD pipelines for faster, safer releases.
#Git
#DevOps
#CI/CD
#Automation
#Releases
Read more →
Dec 25, 2025
Git Merge Strategies: How to Choose the Right Approach
A practical look at Git merge strategies—fast-forward, recursive, ours/theirs, squash, rebase—and when to use each for clean history and safe releases.
#Git
#Version Control
#DevOps
#Collaboration
Read more →
Dec 25, 2025
Helm 101: A Gentle Intro to Kubernetes Package Management
What Helm is, why it matters, and how to install charts, manage releases, and customize deployments.
#Helm
#Kubernetes
#DevOps
#Packaging
Read more →
Dec 25, 2025
Deploy Prometheus & Grafana with Helm: Observability in Minutes
How to install Prometheus and Grafana on Kubernetes using Helm, wire up scraping, secure access, and get dashboards running quickly.
#Observability
#Prometheus
#Grafana
#Helm
#Kubernetes
#DevOps
Read more →
Dec 25, 2025
What Is DevSecOps? Security Built Into Every Release
DevSecOps folds security into DevOps so teams ship fast without leaving gaps. Here’s what it is, why it matters, and how to practice it.
#DevSecOps
#Security
#DevOps
#CI/CD
#Compliance
Read more →
Dec 25, 2025
CI/CD Explained: How Teams Ship Fast Without Breaking Things
What CI/CD means, why it matters, and how continuous integration and continuous delivery/deployment fit together.
#DevOps
#CI/CD
#Automation
#Releases
Read more →
Dec 25, 2025
Deployment Automation: Making Releases Boring (in a Good Way)
Why deployment automation matters, what to automate, and how to build confidence so releases feel routine instead of risky.
#DevOps
#CI/CD
#Automation
#Releases
Read more →
Dec 25, 2025
Version Control Systems: A Practical Guide for Teams
Understand what version control systems are, why teams use them, and how centralized vs. distributed models (like Git) work in practice.
#Git
#Version Control
#DevOps
Read more →
