#!/bin/sh

echo "WRITE SPEED"
for i in {0..2}; do
  A=$(dd if=/dev/zero of=tempfile bs=1M count=1024 conv=fdatasync,notrunc 2>&1 | tail -1 | cut -d " " -f 8-)
  echo $A
done
echo

echo "READ SPEED"
for i in {0..2}; do
  echo 3 > /proc/sys/vm/drop_caches
  A=$(dd if=tempfile of=/dev/null bs=1M count=1024 2>&1 | tail -1 | cut -d " " -f 8-)
  echo $A
done
echo

echo "BUFFERED READ SPEED"
for i in {0..2}; do
  A=$(dd if=tempfile of=/dev/null bs=1M count=1024 2>&1 | tail -1 | cut -d " " -f 8-)
  echo $A
done

rm tempfile