FreeNASTemp

#!/bin/sh

### Parameters ###
cores=4
logfile="/tmp/cputemp.tmp"
email="[email protected]"
subject="FreeNAS Temperatures"
drives="ada0 ada1 ada2 ada3 ada4"

### Set email headers ###
(
    echo "To: ${email}"
    echo "Subject: ${subject}"
    echo "Content-Type: text/html"
    echo "MIME-Version: 1.0"
    echo -e "\r\n"
) > "$logfile"

### Set email body ###
echo "<pre style=\"font-size:14px\">" >> "$logfile"

### CPU Summary ###
(
    echo "### CPU Temp. ###"
) >> "$logfile"

### CPU ###
cores=$((cores - 1))
for core in $(seq 0 $cores)
do
    {
        temp="$(sysctl -a | grep "cpu.${core}.temp" | cut -c24-25 | tr -d "\n")"
        printf "CPU %s: %s C\n" "$core" "$temp"
    } >> "$logfile"
done

### HDD Summary ###
(
    echo ""
    echo "### HDD Temp. ###"
) >> "$logfile"

### Disks ###
for drive in $drives
do
    {
        serial="$(smartctl -i /dev/${drive} | grep "Serial Number" | awk '{print $3}')"
        temp="$(smartctl -A /dev/${drive} | grep "Temperature_Celsius" | awk '{print $10}')"
        printf "%s %-15s: %s C\n" "$drive" "$serial" "$temp"
    } >> "$logfile"
done
echo "</pre>" >> "$logfile"

### Send report ###
sendmail -t < "$logfile"
rm "$logfile"