non-interactive fdisk

#!/bin/sh
hdd="/dev/hda /dev/hdb /dev/hdc"
for i in $hdd;do
echo "n
p
1


w
"|fdisk $i;mkfs.ext3 $i;done 

http://xmodulo.com/2012/11/how-to-run-fdisk-in-non-interactive-batch-mode.html