uniq

Options

--all-repeated=<delimit-method>, -D <delimit-method>

uniq-help-all-repeated

--group=<group-method>

uniq-help-group

--check-chars=<N>, -w <N>

uniq-help-check-chars

--count, -c

uniq-help-count

--ignore-case, -i

uniq-help-ignore-case

--repeated, -d

uniq-help-repeated

--skip-chars=<N>, -s <N>

uniq-help-skip-chars

--skip-fields=<N>, -f <N>

uniq-help-skip-fields

--unique, -u

uniq-help-unique

--zero-terminated, -z

uniq-help-zero-terminated

Examples

Display each line once:

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

Display only unique lines:

sort {{path/to/file}} | uniq {{[-u|--unique]}}

Display only duplicate lines:

sort {{path/to/file}} | uniq {{[-d|--repeated]}}

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

sort {{path/to/file}} | uniq {{[-c|--count]}}

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

sort {{path/to/file}} | uniq {{[-c|--count]}} | sort {{[-nr|--numeric-sort --reverse]}}

The examples are provided by the tldr-pages project under the CC BY 4.0 License.

Please note that, as uutils is a work in progress, some examples might fail.