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Commonly used · Reading and processing text

uniq: Merge adjacent duplicate rows

Put in free practice

Syntax

uniq [-cd] [file]

Options

-c
Show repeat count
-d
Show only duplicate rows

Examples

sort data/names.txt | uniq

Usage and sandbox support

uniq only processes adjacent duplicate rows, and global deduplication usually starts with sort.

Hands-on exercises

Full documentation ↗

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