Bash - Set MP3 filename as the song title

1. You have to install id3v2.

   aptitude -y install id3v2
    

2. Run the following script in directories that contain MP3 files.

   #!/bin/bash
   # Description: For each MP3 file, set the filename as the song title
   for i in *.mp3; do
     SONG="$i"
     id3v2 --song "$SONG" "$i"
   done
    

3. Or add also the order number in the comment.

   #!/bin/bash
   # Description: For each MP3 file, set the filename as the song title and add the order number in the comment.
   idx=1
   for i in *.mp3; do
     SONG="$i"
     id3v2 --song "$SONG" --comment "${idx}" "$i"
    
     let idx=idx+1
   done
    

Layout of ID3v1