test.sh

#!/usr/bin/env bash
# shellcheck disable=SC1083,SC2054,SC2121,SC2207

if [[ $1 == "--debug" ]]; then
    set -x
    export PS4='`[[ $? == 0 ]] || echo "\e[1;31;40m($?)\e[m\n "`:.$LINENO:'
fi


getdriveinfo() {
    # $1 is /sys/block/sata1 etc

    # Skip USB drives
    usb=$(grep "$(basename -- "$1")" /proc/mounts | grep usb | cut -d" " -f1-2)
    if [[ ! $usb ]]; then

        # Get drive model and firmware version
        hdmodel=$(cat "$1/device/model")
        hdmodel=$(printf "%s" "$hdmodel" | xargs)  # trim leading and trailing white space

        fwrev=$(cat "$1/device/rev")
        fwrev=$(printf "%s" "$fwrev" | xargs)  # trim leading and trailing white space

        if [[ $hdmodel ]] && [[ $fwrev ]]; then
            hdlist+=("${hdmodel},${fwrev}")
        fi
    fi
}

for d in /sys/block/*; do
    # $d is /sys/block/sata1 or /sys/block/hd1 etc
    case "$(basename -- "${d}")" in
        sd*|hd*)
            if [[ $d =~ [hs]d[a-z][a-z]?$ ]]; then
                # Get drive model and firmware version
                getdriveinfo "$d"
            fi
        ;;
        sata*|sas*)
            if [[ $d =~ (sas|sata)[0-9][0-9]?[0-9]?$ ]]; then
                # Get drive model and firmware version
                getdriveinfo "$d"
            fi
        ;;
    esac
done


# Sort hdlist array into new hdds array to remove duplicates
if [[ ${#hdlist[@]} -gt "0" ]]; then
    while IFS= read -r -d '' x; do
        hdds+=("$x")
    done < <(printf "%s\0" "${hdlist[@]}" | sort -uz)        
fi

# Check hdds array isn't empty
if [[ ${#hdds[@]} -eq "0" ]]; then
    echo -e "\nERROR No drives found!" && exit 2
else
    echo -e "\nHDD/SSD models found: ${#hdds[@]}"
    num="0"
    while [[ $num -lt "${#hdds[@]}" ]]; do
        echo "${hdds[num]}"
        num=$((num +1))
    done
    echo
fi