Text Processing · medium · solved in-browser (no VM needed) · 3 tiered hints
Write /home/player/top5.sh: a bash script that reads /opt/data/words.txt (one token per line), counts how many times each distinct token appears, and prints the 5 most frequent as 'count token' lines, most frequent first. Use the classic sort | uniq -c | sort -rn | head pipeline. (Authored config, graded structurally — the engine isn't run here.)
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Open the challenge and an in-page editor appears — write your answer and tmpfs.tech grades it server-side against the same checks a real box would run. No VM, no install, no signup needed to try.
grep, sed, awk, cut and friends — extract and reshape text and logs.
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Do I need to install anything? No. Everything runs in your browser.
How is it graded? Automatically and deterministically — your work is checked against the exact rules the live box would apply.