Removing duplicate rows in Notepad++

Question

Is it possible to remove duplicated rows in Notepad++, leaving only a single occurrence of a line?

Answer 1

if the rows are immediately after each other then you can use a regex replace

Search Pattern: ^(.*\r?\n)(\1)+

Replace with: \1

Answer 2

If you don't care about row order (which I don't think you do), then you can use a Linux/FreeBSD/Mac OS X/Cygwin box and do:

$ cat yourfile | sort | uniq > yourfile_nodups

Then open the file again in Notepad++.

Answer 3

You may need a plugin to do this. You can try the command line cc.ddl(delete duplicate lines) of ConyEdit. It is a cross-editor plugin for the text editors, including Notepad++.

With ConyEdit running in background, follow the steps below:

1. enter the command line cc.ddl at the end of the text.
2. copy the text and the command line.
3. paste, then you will see what you want.

Example

Answer 4

None worked for me.

A solution is:

Replace

^(.*)\s+(\r?\n\1\s+)+$

with

\1