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25 lines
669 B
Markdown
25 lines
669 B
Markdown
# uniq
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> Output the unique lines from a input or file.
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> Since it does not detect repeated lines unless they are adjacent, we need to sort them first.
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> More information: <https://www.gnu.org/software/coreutils/manual/html_node/uniq-invocation.html>.
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- Display each line once:
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`sort {{path/to/file}} | uniq`
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- Display only unique lines:
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`sort {{path/to/file}} | uniq -u`
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- Display only duplicate lines:
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`sort {{path/to/file}} | uniq -d`
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- Display number of occurrences of each line along with that line:
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`sort {{path/to/file}} | uniq -c`
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- Display number of occurrences of each line, sorted by the most frequent:
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`sort {{path/to/file}} | uniq -c | sort -nr`
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