Wow, Neil, thanks for dealing with THAT, and sparing me. :-)

@Muthuraj-Madasamy

Additional good reference on regular expressions (the technique shown above to solve the problem) is found starting HERE.

any tutorial info for using notepad++

I’m not sure what you are asking for or needing to know, but it is good if you become familiar with these:

https://npp-user-manual.org/docs/preferences
https://npp-user-manual.org/docs/searching/

Yes Neil…Thanks a lot…

Can you help me any tutorial info for using notepad++? I am new user and not much familiar with these operations.

Can you see the image which i pasted there, in that one i have entered the correct format?

Yes, but I noticed it too late. The text in the image is small and I didn’t think to cross-check.

@muthuraj-madasamy said in Find a line and copy the next 10 lines:

fix this

I’m happy to hear it’s working.

Thanks a lot. I got your point. the check point is creating trouble. I am able to make it now

once again thanks a lot for helping to fix this

Can you see the image which i pasted there, in that one i have entered the correct format?

Thanks for spending time with me and i am a new user for notepad++.

^.pem.\R(.*\R){10}
I used above search but still not selecting all the lines. As you see in the below image.

Hi. You didn’t notice that the expression that appears above is different from what you typed or pasted in, right? It’s missing two asterisks of the original. This is because when you paste text with asterisks in this discussion board, software converts the text to italics so people can make PRETTY TEXT. (The preview pane let’s you see this, but you have to look carefully.)

The way to prevent this is to use one of the two triple backquote techniquesas described in Please Read Before Posting.

Well, I didn’t notice either, and I was wrong to suggest you were using the wrong expression.

I don’t want to have to shout but you really need to remove the check from . matches newline like in the image Alan provided

It’s in the Search Mode box. See it?

This is the output after

Second, I see you used ^.pem.\R(.*\R){10}. Again, this wrong. What you need is ^.*pem.*\R(.*\R){10}. The dot . and asterisk * characters have special meaning to the software that performs regular expression processing; you cannot add/remove them casually.

^.pem.\R(.*\R){10}

I used above search but still not selecting all the lines. As you see in the below image.

Regex machinery cares very little for your intentions, and demands rigid compliance to correct syntax.

I suggest you copy his text, paste, and then carefully replace just the 5 characters 12345 with text you want.

I tried for my file, it is not working. It is selecting all the lines.

I want to search with below lines and copy the 10 lines present below to the lines. Similar blocks are there in multiple location in my log fie.

common specific line is “show chassis environment pem” and i gave the regex as “^.show chassis environment pem.\R(.*\R){10}”

It is seclecting all my lines in the log. Few words are common in other lines “show, chassis, environment”.

I tried with only PEM as that is the unique as “^.* pem|.\R(.\R){10}” but not achieving the required one.

Let me know if i miss anything here.

I wouldn’t use “line filter” for this.
There’s a very reasonable way to do specified by @guy038 in the thread you linked to:

a regex marking operation for ^.*12345.*\R(.*\R){10}

presuming your spec for “one common specific line” was “a line containing 12345”

You’d do this Mark All operation:

Which would highlight the match in red, for example:

And then if you Copy Marked Text and paste it somewhere else, you obtain:

           12345
To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.