Bash – Download YouTube Music

sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl
sudo apt update
sudo apt upgrade -y
sudo apt install youtube-dl python ffmpeg net-tools -y

# Install YouTube Downloader CLI
brew install youtube-dl ffmpeg

# https://github.com/rg3/youtube-dl
# Download YouTube video, convert the video to MP3 and delete the original video
youtube-dl -i -f mp4 -x --audio-format mp3 --audio-quality 0 https://www.youtube.com/watch?v=A9XtDyDUjIU

# Download YouTube video, convert the video to MP3 and keep the original video as MP4 format
youtube-dl -k -i -f mp4 -x --audio-format mp3 --audio-quality 0 https://www.youtube.com/watch?v=A9XtDyDUjIU

# Download YouTube video as MP4 format
youtube-dl -i -f mp4 https://www.youtube.com/watch?v=A9XtDyDUjIU

Alternate option, read a text file.

#!/bin/bash

while IFS='' read -r line || [ -n "$line" ]; do
    echo "Downloading $line"
    youtube-dl -i -f mp4 -k -x --audio-format mp3 --audio-quality 0 $line
done < "$1"

#youtube-dl -i -f mp4 --yes-playlist $1

# -i, --ignore-errors
# -f, --format
# -x, --extract-audio
# --audio-format
# --yes-playlist
# -k to keep the video

# mkdir music
# mkdir video

count=`ls -1 *.mp3 2>/dev/null | wc -l`
if [ $count != 0 ]
then 
    mv *.mp3 music
fi 

count=`ls -1 *.mp4 2>/dev/null | wc -l`
if [ $count != 0 ]
then 
    mv *.mp4 video
fi

Create a text file with the YouTube links with a line break between each. The links can be a single video or a playlist URL, the downloader will parse the playlist and download each of the videos in the playlist and convert to MP3

sh youtube-dl.sh music.txt