A free, printable cheat sheet of the Linux commands you reach for on real machines: files, processes, logs, networking, and permissions.

This is a learning aid for people running their own systems, home labs, and authorized environments. It covers lookup syntax and safe examples, not attack techniques.

Version 1.0. Requires a terminal on Linux or macOS. Print it, keep it next to your keyboard, and use it while you work.

License: personal use. You may print copies for yourself. Do not resell or republish the sheet as your own product.

Updates: free revisions as the sheet grows.