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`