Convert sparsebundle bands size

convert-bands.sh

#!/bin/bash

IFS=$'\n'

bMB=1024 # default is 8MB each size, I'm use 1GB each size, also recommend at lease 128MB each size
sbs=$(($bMB * 2 * 1024))

function hdc {
	mv $1 temp.sparsebundle
	hdiutil convert temp.sparsebundle -format UDSB -tgtimagekey sparse-band-size=$sbs -o $1
	cp -a temp.sparsebundle/com.* $1/
}

if [ ! "$1" == "" ]; then
	hdc $1
else
	sb=`ls | grep .sparsebundle`
	for b in $sb
	do
		hdc $b
	done
fi