Getting relative paths in BASH

If your Cuesheets dir is always in the same directory as your Music, you can just remove root_dir from the path, and what is left is the relative path. If you have the path to your album.tta in album_path (album_path=/Volumes/External/Music/Just/Some/Dirs/Album.tta) and your root_dir set(root_dir=/Volumes/External), just do ${album_path#$root_dir}. This trims root_dir from the front of album_path, so you are left with album_path=Just/Some/Dirs/Album.tta.

See bash docs for more information on bash string manipulation

EDIT:// Changed ${$album_path#$root_dir} to ${album_path#$root_dir}

Okay so I've tackled this a couple of ways in the past. I don't recommend screwing with paths and pwd environment variables, I've seen some catastrophic events because of it.

Here's what I would do

CURRENTDIR=/Volumes/External/Music # make sure you check the existence in your script...SEDVAL=$(echo $CURRENTDIR | sed s/'\/'/'\\\/'/g)#run your loops for iterating through filesfor a in $(find ./ -name \*ogg); do  FILE=`echo $a | sed s/$SEDVAL/./g`  # strip the initial directory and replace it with .  convert_file $FILE # whatever action to be performeddone

If this is something you might do frequently I would actually just write a separate script just for this.