Daily challenge
One Linux command challenge a day
Every day the same task for everyone, picked from the hands-on exercises of the Linux course. Solve it in the live Linux machine next to it and the page checks your work.
How it works
- Read the task: create a file, find a line, fix a permission, write a small script.
- Do it in the real terminal on the page — or type the command if you don't want to boot a machine.
- Press check. A solved day keeps your streak; sign in to appear on the daily leaderboard.
A new challenge starts every midnight. Stuck? Each task has a hint, and the solution is shown once you give up.