How can I change one string in multiple files in few subdirectories? [duplicate]

问题

This question already has answers here:

Find and replace with sed in directory and sub directories (7 answers)

Closed last year.

My question is how can I change one word in many txt files in one directory and multiple subdirectories in BASH? I did as below (check all similar topics) but it is still not working. changePhrase is a name of directory where the subdirectories and files are. Inside that files there is a string that I want to change. I have to make it with a for loop (it's a task). Where is my mistake? Thank you.

#!/bin/bash

for file in changePhrase; do
    if [[ -f $file ]] && [[ -w $file ]]; then
        sed -i -- 's/old/new/g' "$file"
    fi
done

回答1:

you can do

find changePhraseDir -type f -a -writeable|xargs sed -i 's/foo/bar/'

• -type f -> file
• -a -> and
• -writable -> your -w

回答2:

I think your code will work if you just add find to the for loop so:

#!/bin/bash

for file in `find changePhrase`; do
    if [[ -f $file ]] && [[ -w $file ]]; then
        sed -i -- 's/old/new/g' "$file"
    fi
done

回答3:

If changePhrase is the name of your directory try to append /**{,/*} to it. Using the globbing will make the loop go over all the files.

来源：https://stackoverflow.com/questions/53365081/how-can-i-change-one-string-in-multiple-files-in-few-subdirectories