Test disk speed using dd

test_disk_speed.sh

#!/bin/bash

local=$1
size=$2

if [[ ! -n $local ]]; then
    echo "Variable local not set, default will be /tmp/test_disk_speed"
    local='/tmp/test_disk_speed'
fi

if [[ ! -n $size ]]; then
    echo "Variable size not set, default will be 1000"
    size=500
fi

echo "Testing writing speed..."
sync; dd if=/dev/zero of=$local bs=1M count=$size; sync
echo "Testing reading speed..."
sync; dd if=$local of=/dev/zero bs=1M count=$size; sync

rm $local