hi,

To search and replace a string in multiple files i am using following command:
find . -name '*.txt' -print0 |xargs -0 perl -pi -e 's/find_string/replace_string/g'

I want to be prompted while replacing the string.
how this can be done.

thanks for every help.

In theory, simply replace the Perl script with one which prompts you for each substitution. In practice, for usability reasons, you would probably want to use the search and replace features of an editor, and simply feed the editor with a simple script. That way, you get undo, a nice way for the user to see the wider context of each change, and of course, the ability to make unrelated edits when you see something which needs fixing, etc. I personally recommend Emacs, but whatever editor you, or your users, are familiar with should do (unless it's too GUIey for its own good ...).

thanks.
yes, replacing it with an interactive perl script has solved the issue.
the other suggestion would certainly help in a broader context.