backend_cmd_example.rb

def say_with_music(text: 'Space is cool.',
                        music: MUSIC.sample,
                        voice: NONMUSICAL_VOICES.sample,
                        volume: 0.8)

  cmd = "say -v #{voice} \"#{text}\""\
        " & sleep 3 && afplay -v #{volume} #{music} &"

  system(cmd)
end

def kill_say
  cmd = "kill -15 $(ps aux | pgrep -l say | egrep -o '\\d+') &> /dev/null"
  system(cmd)
end

def kill_afplay
  cmd = "kill -15 $(ps aux | pgrep -l afplay | egrep -o '\\d+') &> /dev/null"
  system(cmd)
end