partition

#!/bin/sh
disk=$1
[ -z $disk ] && disk=/dev/sda
size=`parted -s $disk unit GiB print | grep ^Disk | awk '{print $3}' | sed -e 's/\(\.[0-9]*\)\{0,1\}GiB//'`

parted -s $disk mklabel msdos
if [ "$size" -ge 60 ] ; then
	parted -s $disk unit MiB mkpart primary linux-swap 1 2048
	parted -s $disk unit GiB mkpart primary ext4 2 20
	parted -s $disk unit GiB mkpart primary ext4 20 100%
	mkswap ${disk}1
	echo sixty ${size}GiB
	exit 0
elif [ "$size" -ge 20 ] ; then
	parted -s $disk unit MiB mkpart primary linux-swap 1 1024
	parted -s $disk unit GiB mkpart primary ext4 1 10
	parted -s $disk unit GiB mkpart primary ext4 10 100%
	mkswap ${disk}1
	echo twenty ${size}GiB
	exit 0
elif [ "$size" -ge 7 ] ; then
	parted -s $disk unit MiB mkpart primary linux-swap 1 512
	parted -s $disk unit MiB mkpart primary ext4 512 5120
	parted -s $disk unit MiB mkpart primary ext4 5120 100%
	mkswap ${disk}1
	echo seven ${size}GiB
	exit 0
elif [ "$size" -ge 4 ] ; then
	parted -s $disk unit MiB mkpart primary linux-swap 1 32
	parted -s $disk unit MiB mkpart primary ext4 32 3584
	parted -s $disk unit MiB mkpart primary ext4 3584 100%
	mkswap ${disk}1
	echo four ${size}GiB
	exit 0
elif [ "$size" -ge 3 ] ; then
	parted -s $disk unit MiB mkpart primary linux-swap 1 16
	parted -s $disk unit MiB mkpart primary ext4 16 2688
	parted -s $disk unit MiB mkpart primary ext4 2688 100%
	mkswap ${disk}1
	echo three ${size}GiB
	exit 0
else
	echo small ${size}GiB
	exit 1
fi