youtube-mp3 () {
# put thins function in your ~/.bashrc

  ${1:?"error: I need a youtube link"}

  # testing existence of programs
  NEEDED_COMMANDS="yt-dlp ffmpeg"
  missing_counter=0
  for needed_command in $NEEDED_COMMANDS; do
    if ! hash "$needed_command" >/dev/null 2>&1; then
      printf "Command not found in PATH: %s\n" "$needed_command" >&2
      ((missing_counter++))
    fi
  done
  if ((missing_counter > 0)); then
    sudo apt-get install -y $NEEDED_COMMANDS
  fi

  # geting video and converting with ffmpeg
  yt-dlp --restrict-filenames -x --audio-format=mp3 --audio-quality 320k  "${@: -1}"
  # get last argument bashy only
  # https://stackoverflow.com/a/1854031
}