stopwatch.sh

#!/bin/bash -u

function finish {
  hours=$((elapsed / 3600))
  minutes=$(((elapsed % 3600) / 60))
  seconds=$((elapsed % 60))

  if [ $hours -gt 0 ]; then
    time_string="$hours 時間 $minutes 分 $seconds 秒"
  elif [ $minutes -gt 0 ]; then
    time_string="$minutes 分 $seconds 秒"
  else
    time_string="$seconds 秒"
  fi

  say -v Kyoko "$time_string です"
}

trap finish EXIT

start=$(date +%s)
echo "Press [CTRL+C] to stop.."
while true; do
  clear
  current=$(date +%s)
  elapsed=$((current - start))
  hours=$((elapsed / 3600))
  minutes=$(((elapsed % 3600) / 60))
  seconds=$((elapsed % 60))
  printf "%02d:%02d:%02d\n" $hours $minutes $seconds
  if [ $minutes -gt 0 ] && [ $((minutes % 5)) -eq 0 ] && [ $seconds -lt 2 ]; then
      say -v Kyoko "$minutes 分です"
  fi
  sleep 1
done