How to keep only unique line in notepad++

Question

i have this data

aaa
aaa
bbb
ddd
bbb
ccc

how to keep only unique lines as this result

ddd
ccc

Thanks much for any help

This will just remove duplicates. User wants to remove all lines that occur more than once. — Olufon, Feb 01 '17 at 17:30

Olufon · Accepted Answer · 2017-02-01T17:40:47.253

3

Try doing a find and replace all in regex mode with:

^(.*?\R)\1+

and replace with nothing.

Apologies, just observed this will not work is list is not sorted.

edited Feb 01 '17 at 17:40

answered Feb 01 '17 at 17:32

Olufon

Just observed it, I don't know how to unmark as best answer. Added a note. – Olufon Feb 01 '17 at 17:42

user3528679 · Answer 2 · 2017-02-06T02:26:30.723

2

Two step

1st : Edit - Line Operations - Sort Lines Lexicographically Ascending
2nd : replace "(?-s)^(.+\R)\1+" with nothing

Anyone can explain the answer ? .Thanks

edited Feb 06 '17 at 02:26

answered Feb 01 '17 at 17:50

user3528679

1

See @olufon answer, it works when the file is ordered. – Toto Feb 01 '17 at 17:52

2 Answers2