tmpfs.tech · all tracks · Text Processing

Count the 403s

Text Processing · easy · live throwaway Linux box · 3 tiered hints

/var/log/access.log has request lines ending in `<status> <bytes>`. Write the number of lines with status 403 to /home/player/answer.txt (just the number).

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Fastest verified solves

• David58s · ✦ no hints
• Tien117s · ✦ no hints
• kazap127s · ✦ no hints
• Yoga291s · ✦ no hints

How it works

Press start and you get your own real, disposable Linux VM — in the browser terminal or over SSH. Work the task on a live system; tmpfs.tech grades your solution automatically against the actual machine state, then throws the box away. No install, free to try as a guest.

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See all Text Processing challenges →

FAQ

Is it free? Yes — play as a guest, no signup required to start.

Do I need to install anything? No. Everything runs in your browser, or connect over SSH if you prefer your own terminal.

How is it graded? Automatically and deterministically — your work is checked against the real state of the machine you worked on.