How to replace one link with another in a huge pile of files?

Question

linux

I have several folders, they have a huge pile of folders.
Among all files (within files) you need to change one link to another.
What are the best tools to use?
Tried through the Atom editor, there is a mass replacement.
But the problem is that it changes the encoding.
The files are originally windows-1251 and it breaks everything.

Answer 1

I asked myself - I found it myself.
https://habrahabr.ru/post/55121/

find -type f -name '*.txt' -print0 | xargs --null perl -pi -e 's/Windows/Linux/'