ChmodHero
Master Linux file permissions through real DevOps scenarios! Learn chmod commands by solving actual server incidents and deployment challenges.
Why ChmodHero?
Learn Linux permissions through hands-on practice with real scenarios
Real DevOps Scenarios
Practice with actual situations you'll encounter: SSH key security, deployment scripts, config files, and container builds.
Learn by Doing
No boring theory! Jump straight into solving permission problems with immediate feedback and helpful hints.
Track Progress
Earn points, unlock achievements, and compete on the leaderboard. See your improvement over time!
How It Works
Three simple steps to master chmod
Read the Scenario
Each level presents a real-world DevOps problem that needs solving. From broken deployment scripts to insecure SSH keys.
Fix the Permissions
Use your chmod knowledge to solve the problem. Get instant feedback and hints if you need help.
Level Up!
Earn points based on speed and accuracy. Progress through increasingly challenging scenarios.
Sample Scenarios
Get a taste of what you'll be solving
SSH Key Security Alert!
"Security audit found that SSH private keys have wrong permissions. This is a critical security risk!"
Your task: Secure the SSH private key so only the owner can read/write it
Container Build Failure!
"Your Docker build is failing because the build script doesn't have the right permissions."
-rw-rw-rw- test.sh
Your task: Make scripts executable while keeping them secure
Database Backup Emergency!
"The automated backup script failed because it can't access the database dump file."
-rw-r----- backup.sh
Your task: Fix permissions for backup script and data access
Ready to Become a Chmod Hero?
Stop struggling with Linux permissions! Learn through practice with real scenarios that you'll actually encounter in your DevOps career.
Start Your Journey