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tldr/pages/common/uniq.md

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uniq

Output the unique lines from the given input or file.

  • Display each line once:

uniq {{file}}

  • Display only unique lines:

uniq -u {{file}}

  • Display only duplicate lines:

uniq -d {{file}}

  • Display number of occurences of each line along with that line:

uniq -c {{file}}

  • Display number of occurences of each line, sorted by the most frequent:

uniq -c {{file}} | sort -nr