IT Cheat Sheets Collection – 20 Essential Quick Reference Guides for Developers, DevOps & SysAdmins

This collection of professional IT cheat sheets provides quick-reference guides covering the most important tools, commands, and technologies used by modern developers, system administrators, DevOps engineers, and IT professionals.

Designed for both beginners and experienced practitioners, these concise references help you quickly recall essential commands, configurations, and workflows across multiple areas of modern infrastructure and software development.

Inside this collection you will find practical cheat sheets for:

• Linux Essential Commands
• Bash Scripting
• Git Version Control
• Docker Containers
• Kubernetes (K8s)
• Python Essentials
• PostgreSQL Database
• Networking & Troubleshooting
• SSH & Remote Access
• Vim Editor
• Nginx Web Server
• Systemd & Service Management
• AWS CLI Essentials
• Terraform Infrastructure as Code
• Ansible Automation
• CI/CD & GitHub Actions
• Regular Expressions (Regex)
• Firewall & Security
• YAML & JSON Syntax
• PowerShell Essentials

These quick reference guides are ideal for:

• DevOps engineers working with cloud-native infrastructure
• System administrators managing Linux servers
• Developers building modern applications
• Cybersecurity professionals working with infrastructure security
• Students preparing for IT certifications
• Anyone learning Linux, cloud computing, and automation tools

Each cheat sheet is designed to be clear, practical, and easy to use during real-world work, whether you're troubleshooting systems, writing automation scripts, configuring servers, or deploying applications.

Instead of searching through long documentation pages, these guides provide fast access to the commands and concepts you need most.

Perfect for learning, daily work, and technical reference.

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