#!/bin/sh

for i in {0..4}; do
echo
echo "WRITE SPEED"
dd if=/dev/zero of=tempfile bs=1M count=1024 conv=fdatasync,notrunc
echo

echo "READ SPEED"
echo 3 > /proc/sys/vm/drop_caches
dd if=tempfile of=/dev/null bs=1M count=1024
echo

echo "BUFFERED READ SPEED"
dd if=tempfile of=/dev/null bs=1M count=1024

rm tempfile
done