find and replace string in a file

Question

I\'m trying to find and replace a string in a folder of files.

Could someone possibly help me?

My script is as follows:

#!/bin/bash
OLD=\"Thi         


        

Answer 1

The output goes to screen (stdout) because of the following:

sed "s/$OLD/$NEW/g" "$f"

Try redirecting to a file (the following redirects to a new files and then renames it to overwrite the original file):

sed "s/$OLD/$NEW/g" "$f" > "$f.new" && mv "$f.new" "$f"