Find unique lines
linux, sorting, uniq, unique
Solution
`uniq` has the option you need:
-u, --unique
only print unique lines
$ cat file.txt
1
1
2
3
5
5
7
7
$ uniq -u file.txt
2
3
Problem
How can I find the unique lines and remove all duplicates from a file? My input file is ``` 1 1 2 3 5 5 7 7 ``` I would like the result to be: ``` 2 3 ``` `sort file | uniq` will not do the job. Will show all values 1 time