Text Processing · medium · solved in-browser (no VM needed) · 3 tiered hints
Write /home/player/bycat.sh: a bash script that reads the comma-separated /opt/data/expenses.csv (a header line, then rows of category,amount), and for each distinct category prints 'category total' where total is the summed amount for that category. Skip the header. Use an awk associative array keyed by category, summing in the main block and printing with a for-in loop in an END block. (Authored config, graded structurally — the engine isn't run here.)
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grep, sed, awk, cut and friends — extract and reshape text and logs.
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