Text Processing · medium · solved in-browser (no VM needed) · 3 tiered hints
Write /home/player/tocsv.sh: a bash script that turns the whitespace-columned /opt/data/report.txt (fields separated by one or more spaces, exactly 3 fields per line) into a comma-separated file printed to stdout. Use awk with the default whitespace field splitting and a comma output field separator (OFS), rebuilding the record with $1=$1 or printing the explicit field list. (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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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.
How is it graded? Automatically and deterministically — your work is checked against the exact rules the live box would apply.