Quick one liner to search all files in current folder and replace text.

find . -type f -exec sed -i 's/-e //' {} +
Remove ‘-e ‘ from all files in current folder.
find . -type f -exec sed -i 's/python3/python/' {} +
Remove ‘3’ from python3 in all files in current folder
find . -name '*.html' -exec sed -i 's/http\:/https\:/' {} +
Fix exported bookmarks to be imported into LinkAce