Free IT Cheat Sheets
Download 20 professional quick reference guides — free PDF downloads for Linux, Docker, Git, Python, and more.
Why Use Our Cheat Sheets?
Professional quick reference guides designed for IT professionals and learners.
📄 Print-Ready PDFs
Compact 1-2 page format perfect for printing and pinning near your workstation.
🎨 Professional Design
Dark theme with orange accents, clear typography, and organized command reference layout.
📚 Linked to eBooks
Each cheat sheet links to related eBooks for deeper learning on the topic.
🔒 100% Free
All cheat sheets are free to download. No hidden costs, no premium tier.
Frequently Asked Questions
What are Dargslan IT cheat sheets?
Dargslan IT cheat sheets are free, professionally designed PDF reference guides in four tiers: Quick Reference (1-2 pages), Beginner's Guides (3-6 pages), Intermediate Guides (5-10 pages), and Advanced Guides (8-15 pages with expert-level content, architecture patterns, and production strategies).
How many cheat sheets are available?
We currently offer 442 free cheat sheets covering topics like Linux, Docker, Kubernetes, Git, Python, PostgreSQL, PowerShell, and more across four skill levels. New cheat sheets are added regularly.
Are the cheat sheets really free?
Yes, all cheat sheets are completely free to download. We just ask for your email address so we can notify you when new cheat sheets are released.
What is the difference between the four tiers?
Quick Reference sheets are compact 1-2 page PDFs for printing. Beginner's Guides are 3-6 pages for learning from scratch. Intermediate Guides are 5-10 pages with best practices for experienced users. Advanced Guides are 8-15 pages covering expert topics, production architecture, performance tuning, and real-world strategies.
Can I print the cheat sheets?
Absolutely! All PDFs are designed to look great both on screen and when printed. Quick Reference sheets are especially good for printing and keeping near your desk.
How do I download a cheat sheet?
Click on any cheat sheet to view its details, then click the download button. Enter your email address and the PDF will be available for immediate download.
Free IT Cheat Sheets — Linux, Docker, Kubernetes, Bash & More
Browse our growing library of free, downloadable cheat sheets for system administrators, DevOps engineers, security professionals, and software developers. Every cheat sheet is designed to be printed on a single page or pinned next to your terminal — high-density command references with the flags, options, and one-liners you actually use, written by engineers who use these tools in production every day.
What's in the cheat sheet library
- Linux command cheat sheets: Bash, awk, sed, grep, find, ss, lsof, tcpdump, journalctl, systemctl, iptables, nftables, rsync, ssh, and dozens more — every flag explained with real-world examples.
- Container & orchestration: Docker, Podman, Docker Compose, Kubernetes (kubectl), Helm, k9s, k3s, OpenShift CLI — covering pods, services, networking, storage, and troubleshooting.
- Cloud platforms: AWS CLI, Azure CLI (az), gcloud, Terraform, Pulumi, and CloudFormation — IAM, networking, compute, storage, and cost-control commands.
- Security tools: Nmap, Nikto, Hydra, John the Ripper, Burp Suite, Wireshark filters, OWASP ZAP, OpenSSL, GPG, fail2ban, Lynis, and SELinux/AppArmor cheat sheets.
- Programming references: Python (asyncio, pandas, FastAPI), Bash scripting, PowerShell, Go, regex (PCRE & POSIX), Git, and SQL (PostgreSQL, MySQL, SQLite).
- Editor productivity: Vim, Neovim, tmux, screen, GNU Emacs, VS Code keyboard shortcuts — covering modes, motions, plugins, and workflow tricks that 10x your speed.
Why our cheat sheets are different
Most cheat sheets you find online are either outdated (referencing flags removed five major versions ago), bloated with redundant filler, or written by content marketers who copy-pasted from man pages. Ours are different: each one is reviewed by a working engineer, organized by real workflow patterns rather than alphabetical command lists, and updated when upstream tools ship breaking changes. The goal is simple — when you're staring at a broken production server at 3am, our cheat sheet should give you the answer in under five seconds.
Every PDF is completely free, requires no signup, and is licensed for personal and commercial use inside your team. Print them, pin them on the office wall, share them in your company Slack — they're yours to use however helps you ship faster. We also bundle related cheat sheets into themed PDF packs (Linux SysAdmin Pack, Kubernetes Operator Pack, Cloud Engineer Pack) for offline reading.
Want to go deeper?
Cheat sheets are great for quick recall, but if you want to actually master a tool, pair them with our in-depth eBooks — every cheat sheet links back to the books that cover the same topic in full. For new tips and references delivered to your inbox, subscribe to the Dargslan newsletter or follow our technical blog.