global

def kill_music_on_linux
  system("killall -9 mpg321 &>/dev/null") if kernel.system("which mpg321 &>/dev/null && type mpg321 &>/dev/null")
  system("killall -9 mpg123 &>/dev/null") if kernel.system("which mpg123 &>/dev/null && type mpg123 &>/dev/null")
end