All posts
133 references and guides, newest first. Browse by topic →
2026
- New Book Releases: Prometheus 3 and LLMOps for DevOps Engineers
- Top 10 Free Linux Distributions for Desktop and Servers (2026)
- How Traffic Flows in Kubernetes: A Deep Dive with Diagram (2026)
- Argo CD Commands by Function and Examples
- How to Check Open Ports on Linux (ss, netstat, lsof)
- Fix: Docker "exec /usr/bin/sh: exec format error"
- Fix: git submodule update — "fatal: detected dubious ownership"
- kubectl: couldn't get current server API group list (Fixed)
- 25 systemd Commands Every Linux Admin Should Master
- 30 Linux Commands Every SysAdmin Should Know
- 15 ChatGPT / Claude Prompts Every SRE and DevOps Engineer Should Bookmark
- How to Check Disk Space on Linux (df and du)
- How to Check if a Service Is Running on Linux
- How to Check Memory Usage on Linux (free and vmstat)
- How to Create a systemd Service on Linux
- journalctl — View and Filter systemd Logs
- Linux Monitoring Commands — CPU, Memory, Disk, and Processes
- systemctl Commands — The Complete Reference
- systemd Service Failed to Start — How to Fix It
- systemd Timers vs Cron — A Practical Comparison
- top vs htop — Which Linux Process Monitor to Use
- AWS Services Not Covered by Free Tier
- Chrome Tab Manager for DevOps
- AWS Terraform Resource Types — 25 Examples
- The Definitive list of AWS Terraform resource types
- JSON to CSV Converter — Free, Handles Nested Arrays
2023
- Crontab Generator - easily create cron jobs in seconds
- How SSL/TLS Certificates Work: The Process Explained
- What is Load Balancer and How it works ?
- Python sort() vs sorted() — Which to Use
- Terraform vs Kubernetes — Key Differences
- Terraform — 7 Essential Commands
- Most-Used Docker Commands
- Essential Kubernetes Commands
- 7 Code Issues - SonarQube can detect
- python for loop - top 10 examples to get started now
- pip - How to Use pip, python Package Installer
- 9 Python Libraries for Automation
- python Syntax - How to use pyhton for beginners
2022
2021
- Why Linux is the Better Choice for the Digital Age
- 75+ Crontab Examples for Real-World Tasks
- What Does 2>&1 Mean in Shell? (Redirect Explained)
- ssh examples, usage, Options, protocol
- iostat, vmstat & netstat: Linux Performance Monitoring Commands
- Bash Exit Codes and Linux Error Codes (Full Reference)
- Strace Examples, Options & Usage
- netstat - 10 Most common usage with examples
- vi editor cheat sheet in pdf format
- SSH Without a Password — A Few Simple Steps
- bash for loop Explained with Examples
- find command : Top 14 Ways to find files in Unix and Linux
- Bash Positional Parameters, Arguments
- rmdir Force Delete: How to Force Remove a Directory in Linux
- Red Hat 7.x Installation : Step by Step Guide
- Containers Vs VMs : Top 5 Differences you must know
- DNS Sinkhole Setup — Defense Against Botnet C2
2020
2019
- Six Common Mistakes For JavaScript Programmers To Avoid
- Biggest Cloud Security Threats
- What can you do to secure your data in the cloud?
- Learn How To Obfuscate JavaScript with Node.js
- Top 5 Reasons Why You Should Switch To Linux
- Is Your Free VPN Putting Your Data at Risk?
- Identity Protection Online: A Simple Tip
- Six Common Mistakes For Python Programmers To Avoid
- Security & Compliance for Cloud Developers
- 8 Best Text Editors for Linux desktop
- Bitcoin Miner Virus: How To Detect And Delete It
- TLS vs SSL: What's the Difference ?
- Cyberattack Risk: More Likely Than a Home Invasion
- How to Start a Developer Career
- Best Programming Languages to Study at College
- Getting Started With Python
- 5 Things Slowing Down Your Internet Speed
2018
2017
- KRACK - Key Reinstallation Attacks on WPA2 Protocol
- Linux CVE-2017-1000253 PIE/Stack Corruption Vulnerability
- chmod Quick Referance with Examples
- SHA-1 Collision - Insecurity of SHA-1 exposed by Google
- man command in Linux and Unix
- Solaris Network Configuration
- Top 10 Must have Books for Unix and Linux
- 10 Must Have O'Reilly Linux and Unix Books
- MongoDB Ransom Attacks Hit 27000 Systems
2016
2014
2012
2011
2010
2009
- Geek Speaks
- NISplus Installation & Administration
- Solstice DiskSuite - Admin's Guide
- Backup Commands in Linux & Unix with Usage and Examples
- Booting Problems & Solutions in Solaris
- Booting Process in Solaris
- Crontab Format & Syntax Explained (with Examples)
- DNS Troubleshooting
- Domain Name Service
- fsck Command - Check & Repair Linux & Unix File Systems
- Securing Solaris
- Solaris Error Messages A-D
- Solaris Error messages E-K
- Solaris error messages L-N
- Solaris Error Messages O-S
- Solaris Error Messages T-Z
- Solaris Installation
- Solaris Jumpstart - Howto guide
- Unix Commands Tutorial
- Unix Tutorial - Learn Unix OS Basics to get started
- Unix Tech Tips
- Veritas Volume Manager - vxassist
- vi editor Quick Reference & Cheat Sheet
- Managing Sun OpenBoot Parameters and commands
- Veritas Volume Manager - vxdiskadm
- RefDesk — Essential DevOps & Linux Resources