Text processing
uniq
Removes duplicate lines from sorted files.
Ubuntu
CentOS
Debian
Arch
SUSE
Slackware
Alpine
Fedora
NetBSD
Verified: 2025-09-09
Syntax
$uniq [OPTIONEN] [EINGABE [AUSGABE]]
Examples
$sort datei.txt | uniq
$uniq -c datei.txt
Typical use cases
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Standard usage
uniq --help
Note
Works best with sorted input. In NetBSD: Extensions like -f for field skipping.
Export