# Learn by doing.

This is not just another vocabulary test. Build real-world skills employers are looking for in fields expected to grow up to 34% in the next decade.

216
Tutorials
54
Labs
216
Quizzes
27
Exams
00 echo "learn... 01 DATA ENGINEERING & ANALYTICS 02 DEVOPS & INFRASTRUCTURE 03 CYBER SECURITY & OPERATIONS"
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72.6% of Fortune 500 companies run mission-critical workloads on Linux. 90% of public cloud infrastructure across AWS, Azure, and Google Cloud runs on Linux. 100% of the world's top 500 supercomputers run on Linux. These courses teach you the same tools powering that infrastructure, from your first terminal command to production-grade security operations.

(Source: U.S. Bureau of Labor Statistics, TOP500, Statista)

Three tracks. One mission.

Choose your path

Each track starts with Linux fundamentals and builds to job-ready skills. 10 levels, 72 tutorials, and a Python capstone. No prior experience required.

Data Pro

Data Engineering & Analytics

From Linux basics to machine learning. Learn awk, SQL, pandas, duckdb, PostgreSQL, ETL pipelines, and Python for data. Build the systems that move, transform, and analyze data.

10 levels · 72 tutorials · 18 labs · $29.99
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DevOps Pro

DevOps & Infrastructure

From Linux basics to platform engineering. Learn Docker, Nginx, Terraform, Kubernetes, Prometheus, Grafana, GitOps, and Python for infrastructure automation.

10 levels · 72 tutorials · 18 labs · $39.99
View Curriculum
Security Pro

Cyber Security & Operations

From Linux basics to security architecture. Learn nmap, tshark, forensics, SOC operations, compliance frameworks, and Python for security automation.

10 levels · 72 tutorials · 18 labs · $34.99
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DOCKER · KUBERNETES · TERRAFORM · PYTHON · POSTGRESQL · PROMETHEUS · GRAFANA · ANSIBLE · NMAP · TSHARK · PANDAS · SCIKIT-LEARN · NGINX · GIT · DUCKDB · MATPLOTLIB

Pricing

Start free. Upgrade when you're ready.

Two full levels are free with no account required. Individual tracks cost less than a single month of most learning platforms.

Jr. Server Admin Free
Levels 1-2 · 16 tutorials · 16 quizzes · 4 labs · 2 exams · No account needed
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Data Pro
$29.99
One-time purchase · 10 levels
  • 72 tutorials · 72 quizzes
  • 18 labs + 4 master labs
  • 9 level exams
  • awk, jq, SQL, pandas, duckdb
  • PostgreSQL administration
  • ETL pipelines · ML from CLI
  • Python for data
  • Completion certificate
Get Data Pro
DevOps Pro
$39.99
One-time purchase · 10 levels
  • 72 tutorials · 72 quizzes
  • 18 labs + 4 master labs
  • 9 level exams
  • Docker, Nginx, Terraform, K8s
  • Prometheus · Grafana · GitOps
  • Real stack deployment
  • Python for DevOps
  • Completion certificate
Get DevOps Pro
Security Pro
$34.99
One-time purchase · 10 levels
  • 72 tutorials · 72 quizzes
  • 18 labs + 4 master labs
  • 9 level exams
  • nmap, tshark, lynis, auditd
  • SOC operations · Forensics
  • Compliance · Architecture
  • Python for security
  • Completion certificate
Get Security Pro
Save 33%

Complete Bundle

$69.99
All three tracks · One-time purchase
Data Pro
10 levels
awk, SQL, pandas, duckdb, PostgreSQL, ML, Python
DevOps Pro
10 levels
Docker, Nginx, Terraform, K8s, Prometheus, GitOps, Python
Security Pro
10 levels
nmap, tshark, forensics, SOC, compliance, Python
216
Tutorials
54
Labs
27
Exams
$104.97 $69.99
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Money-back guarantee

30 days, no questions asked. If it's not for you, email us for a full refund.

5% donated

5% of every purchase goes to Boys & Girls Clubs of America.

Student discount

20% off any track or the bundle with a valid .edu email.

Military discount

20% off for active duty and veterans. Email us with proof of service.

Questions

Before you ask

It's a 20,000+ line interactive application with guided tutorials, quizzes with instant feedback, hands-on labs, and level exams. You could learn everything in here from scattered man pages and Stack Overflow threads. The value is the structure, the progression, and knowing what to learn next.
No. Level 1 starts with navigating the file system and viewing files. If you can open a terminal, you can start. The whole point is to build you up from zero.
Every tutorial walks you through concepts step by step with real examples before testing you. The quizzes reinforce what you just learned. If you're truly stuck, the opnForum community is there to help.
Free resources are fragmented. You watch a video on Docker, another on Nginx from a different instructor with different conventions, then a blog post on SSL from 2019 that's half outdated. opnf.sh is a single coherent curriculum that builds on itself.
Each track starts with the same Linux fundamentals, then specializes. Security Pro goes into hardening, forensics, and compliance. Data Pro goes into SQL, pandas, pipelines, and machine learning. DevOps Pro goes into Docker, Terraform, Kubernetes, and observability. Pick the career path you want.
Yes. 30 days, no questions asked. Email us and you'll get your money back.
Only to download the script initially. After that, everything runs locally on your machine. No accounts, no cloud, no telemetry.

Start building real skills today

One purchase. Lifetime access. No subscription.

Get the Complete Bundle — $69.99

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