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tldr/pages/common/uniq.md
Vitor Henrique c8f956319f
pages*: simplify page description (#12149) 
Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
2024-02-14 21:25:13 +01:00

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uniq

Output the unique lines from a input or file. Since it does not detect repeated lines unless they are adjacent, we need to sort them first. More information: https://www.gnu.org/software/coreutils/uniq.

  • Display each line once:

sort {{path/to/file}} | uniq

  • Display only unique lines:

sort {{path/to/file}} | uniq -u

  • Display only duplicate lines:

sort {{path/to/file}} | uniq -d

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

sort {{path/to/file}} | uniq -c

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

sort {{path/to/file}} | uniq -c | sort -nr