I want to start each sentence from a new line by changing '. ' to '.\n'. The solution from https://unix.stackexchange.com/questions/190985/how-to-put-sentences-on-separate-lines-on-linux
sed 's/[.] */&\n/g' text.txt
doesn't work on MacOS:
sed: 1: "s/.
": unterminated substitute pattern
How to fix it to run on MacOS?