How to do a recursive find and replace from the command line?

Question

Is there a simple way to recursively search all files in a directory hierarchy for a term (e.g. port) and replace all occurrences of that term with another (e.g. port-lookup).

I have tried the suggestions in this post, but they are only applicable for a single file.

Answer 1

Try this

find ./ -type f -exec sed -i -e 's/port/port-lookup/g' {} \;

If you don't want to change file modification time

grep -rl 'port' /search_in_this_dir | xargs sed -i 's/port/port-offset/g'