This script moves all mp3 files in a folder to different directories containing 255 files each, I used this script because one of my Dad's vehicle can only hols 255 per folder and he had 1,000+ songs in a USB drive

divide_files_into_folders.sh

#!/bin/bash

# The first folder moves only 253 files, but that's ok for my use =)

folder_count=1
file_count=1

pushd /Volumes/NO\ NAME/
	mkdir ${folder_count}
	for f in *.mp3; do
		file_count=$(($file_count + 1))
		
		if [ $(($file_count % 255)) == 0 ]; then
			folder_count=$(($folder_count + 1))
			mkdir ${folder_count}
		fi
		
		mv "${f}" "${folder_count}/"
	done
popd