A function for throttling stdout

throttle

# Throttle stdout
throttle() {
  # Check that stdin isn't empty
  if [[ -t 0 ]]; then
    printf -- '%s\n' "Usage:  pipe | to | throttle [n]" ""
    printf -- '\t%s\n'  "Increment line by line through the output of other commands" "" \
      "Delay between each increment can be defined.  Default is 1 second."
    return 0
  fi

  # Default the sleep time to 1 second
  sleepTime="${1:-1}"

  # Now we output line by line with a sleep in the middle
  while read -r; do
    printf -- '%s\n' "${REPLY}"
    sleep "${sleepTime}" 2>/dev/null || sleep 1
  done
}