Text Processing · pro · solved in-browser (no VM needed) · 3 tiered hints
Write /home/player/lookup.sh: a bash script that uses awk to enrich /opt/data/orders.csv (rows of order_id,user_id,amount) with names from /opt/data/users.csv (rows of user_id,name). Read users.csv first into an array keyed by user_id (the NR==FNR trick), then for each orders row print order_id,name,amount comma-separated. Both files are comma-separated and have no header. (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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