gistfile1.txt

#!/bin/bash
set -v
aptitude update &> /dev/null
DEBIAN_FRONTEND=noninteractive aptitude install mdadm -y
mdadm --create /dev/md0 --chunk=4096 --level=0 --raid-devices=5 /dev/xvd[e-i]
time dd if=/dev/md0 of=/dev/null iflag=direct bs=4096 count=10240
time dd if=/dev/md0 of=/dev/null iflag=direct bs=65536 count=640
time dd if=/dev/zero of=/dev/md0 oflag=direct bs=4096 count=10240
time dd if=/dev/zero of=/dev/md0 oflag=direct bs=65536 count=640
while !$(mdadm --stop /dev/md0); do
    sleep 1
done