Shell Programming and Scripting

Hi all, I kwow there are many ways to insert string into a files all over the forum, but I need to make that process like patch do because in the same file I can have the same pattern in many locations, for that I need the send two patterns, one for "before" and another for the "after".

I cannot be capable to do it with patch and diff because the original file to be patched can be modified by other scripts after doing the patch file with diff.

So that is the example:

I have "file" with that content:

Code:

hello
hello
second
hello
patern
hello
hello
pattern
second
hello
hello
second

And I want to add the content of another file called "toadd" with that content:

Code:

ADDED

And I need the instert between the word "pattern" and "second". But only between them and have that result in the "file":

Code:

hello
hello
second
hello
patern
hello
hello
pattern
ADDED
second
hello
hello
second

Thanks for help

Hi

Code:

sed  '/pattern/{N;/\nsecond/s/\n/&ADDED&/}' file

Guru.

Thanks, it's just working fine.

And using ed instead of sed?