What is the difference between "sort -u" and "sort | uniq"?
56 One difference is that uniq has a number of useful additional options, such as skipping fields for comparison and counting the number of repetitions of a value. sort 's -u flag only …
Sort and count number of occurrence of lines
Nov 26, 2014 · uniq options: -c, --count prefix lines by the number of occurrences sort options: -n, --numeric-sort compare according to string numerical value -r, --reverse reverse the result of …
Difference between sort -u and uniq -u - Unix & Linux Stack …
May 30, 2022 · The question is: is the output of sort -u |wc the same as uniq -u |wc? Because they don't yield the same results. The manual for uniq specifies: -u, --unique only print unique lines …
Difference between using `sort -u` and `sort | uniq -u`
Sep 25, 2017 · The title and the body ask two different questions. sort | uniq is the same as sort -u, and sort | uniq -u is explicitly asking for a totally different behaviour; which one do you care …
How to print only the duplicate values from a text file?
You can use uniq(1) for this if the file is sorted: uniq -d file.txt If the file is not sorted, run it through sort(1) first: sort file.txt | uniq -d This will print out the duplicates only. Technically the input …
Why doesn't "uniq --unique" remove all duplicate lines?
Jul 16, 2021 · uniq requires the input to be sorted (from man uniq) if you want it to remove all duplicate lines: DESCRIPTION Filter adjacent matching lines from INPUT (or standard input), …
How to get only the unique results without having to sort data?
62 $ cat data.txt aaaaaa aaaaaa cccccc aaaaaa aaaaaa bbbbbb $ cat data.txt | uniq aaaaaa cccccc aaaaaa bbbbbb $ cat data.txt | sort | uniq aaaaaa bbbbbb cccccc $ The result that I …
uniq - finding all non-unique lines in a file - Unix & Linux Stack …
Nov 7, 2019 · 2 I'm trying to use uniq to find all non-unique lines in a file. By non-unique, I mean any line that I have already seen on the previous line. I thought that the "-D" option would do …
What is the point of uniq -u and what does it do? [duplicate]
Nov 17, 2020 · uniq seems to do something different than uniq -u, even though the description for both is "only unique lines". What's the difference here, what do they do?
How is uniq not unique enough that there is also uniq --unique?
Jun 18, 2015 · 47 Short version: uniq, without -u, makes every line of the output unique. uniq -u only prints every unique line from the input. Slightly longer version: uniq is for dealing with files …