Hands-on cybersecurity training
Learn security by breaking and defending real systems.
Every course runs live in your browser: no setup, no VMs. Finish the labs, submit your flags, and climb the global leaderboard.
Linux & Scripting
2 coursesLinux Command-Line 101 + 201 - Full Course
Unlocks the paid version of the course. This course is for total beginners to actually understand Linux command-line, manipulating files, outputs, using pipes, redirections, text processing and learn the tricks that turn the terminal into a power tool.
Linux Command-Line 101 - Free
This course is a fully interactive and comprehensive class about Linux command-line for beginners. Do you want to know how to navigate through a filesystem and run programs on Linux using command-line like a pro (well, an informed beginner at least)? Hop in and grab your best keyboard 😎! You won't need to install *anything* on your computer (for real), absolutely no prerequisites except from curiosity.