CLIP
Shared foundation
Command-line fluency, Linux fundamentals, reconnaissance, scripting, credentials, and evidence
Learn Linux through a browser-based CTF
Open, structured scenarios in a browser terminal build command-line fluency. The Range runs live targets.
Follow the work from explanation to transfer
CTF at CLI-Games is not one difficulty ladder or one kind of player. Start with documentation when you need context, train in the open when you want repetition, then take that knowledge to The Range when you are ready to work independently.
Documentation
Understand the terrain
Start with practical documentation for capture the flag, Linux fluency, and the habits that make a terminal useful. The Wiki is there when you need the map, not a gate you have to pass before playing.
Read the documentationTraining
Build the habit
Work through an open skill map from command-line fundamentals into reconnaissance, scripting, exploitation, forensics, and analysis. Guidance is available when a technique is new; every scenario remains open.
Open CTF trainingThe Range
Test the transfer
Take those habits into rotating live challenges on isolated Linux infrastructure. Investigate an unfamiliar target, recover objectives, and see what survives contact with a real system.
Open the RangeNew to the terminal? Start with the foundation route. Already comfortable in Linux? Choose a harder scenario, roam the map, or enter The Range and see what you actually remember.
The useful layer sits beneath the interface
The goal is not to memorize commands for their own sake. It is to know how to inspect a system, follow evidence, test an assumption, and keep moving when the abstraction stops helping.
CLIO
Offensive practice
Scoped exploitation, privilege escalation, lateral movement, reporting, and accurate remediation
CLIA
Defensive analysis
Network forensics, artifact recovery, incident reconstruction, and reproducible handoff
Teaching a class?
Create a group, put one join link on the screen, and set a weekly goal such as finishing Orientation; the group page shows how many have finished and each student's progress. Students can start as guests on day one: the server verifies their work, it counts toward the goal, and registering keeps it.