LinuxQuestions.org - Script file to replace large text blocks in files?

- Linux - Software (https://www.linuxquestions.org/questions/linux-software-2/)

- - Script file to replace large text blocks in files? (https://www.linuxquestions.org/questions/linux-software-2/script-file-to-replace-large-text-blocks-in-files-97499/)

Script file to replace large text blocks in files?

Does anyone have a Linux shell script to do the following:

Walk through all sub-directories below the current one and replace the text in files of a specified extension with the given text. The only kicker is, I want to replace a block of text from each file that is probably about 10 lines long, so I don't know if I can just use something like this:

Code:

#! /bin/sh

# filename: replaceall

find . -type f -name '*.txt' -print | while read i

    do

        sed 's|foo|bar|g' $i > $i.tmp && mv $i.tmp $i

    done

Thanks