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Foundations

One-Liner Dojo

Code-golf for the command line. Accomplish the task in a single, correct one-liner — then get graded on how tight and elegant it is. Correctness first, then stars for efficiency. The playground where the fundamentals become fluency.

0 of 23 labs · 5 modules
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01Warm-Ups

0 / 6
  1. dojo-make-executable
  2. dojo-create-service-user
  3. dojo-nth-line
  4. dojo-lowercase-usernames
  5. dojo-squeeze-spaces
  6. dojo-count-failed-logins

02Filter & Rewrite

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  1. dojo-sed-replace
  2. dojo-strip-comments
  3. dojo-extract-emails

03Fields & Columns

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  1. dojo-field-count
  2. dojo-last-field
  3. dojo-total-lines
  4. dojo-csv-third-field
  5. dojo-sum-column

04Files in Bulk

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  1. dojo-largest-file
  2. dojo-find-large-logs
  3. dojo-remove-temp-files

05Count, Rank & Combine

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  1. dojo-unique-sorted-ips
  2. dojo-count-distinct-users
  3. dojo-top-status-code
  4. dojo-set-difference
  5. dojo-two-file-join
  6. dojo-longest-line