linebreaks.sh

#!/bin/sh --

# The macOS "defaults domains" command writes a comma-delimited list of domains to stdout.
# I wanted to get the domains as a list, one per line, without commas.

# Inspired by:
# http://stackoverflow.com/questions/723157/how-to-insert-a-newline-in-front-of-a-pattern
# http://stackoverflow.com/questions/17363030/how-do-i-insert-a-newline-linebreak-after-a-line-using-sed

# Default output

defaults domains
# com.apple.quicktimeplayer, com.apple.recentitems, com.apple.registration, com.apple.reminders, com.apple.scheduler, com.apple.screencapture

# Output with linebreaks

defaults domains | sed $'s/, /\\\n/g'
# com.apple.quicktimeplayer
# com.apple.recentitems
# com.apple.registration
# com.apple.reminders
# com.apple.scheduler
# com.apple.screencapture