BASH: list ESXi disks

exsi_disk_status.sh

#!/bin/bash
# Quickly display the output from various ESXi disks.
# Until I get feedback, this is going to be a dirty to write it. Should work?
# 
# File syntax for the drive listing should look something like this -
#   DRIVE NAME = DRIVE ID
# The '=' is important as that's the sepperator for the variables.

drives="esxi_drive_listing"
command="esxcli storage core device smart get -d"
time=`date +"%D @ %r"`
title="TITLE HERE"
filename="temp_name"
email="fuu@bar.net"

{
    echo ""
    echo "$title"
    echo ""
    echo "Time of S.M.A.R.T. analysis: $time"
    echo ""
    cat "$drives" | while read line; do
        disk_name=`echo "$line" | cut -f1 -d "="`
        disk_id=`echo "$line" | cut -f2 -d "=" | sed 's/^ *//g'`
        if [ "$1" = "-v" ]; then
            eval "$command $disk_id"
        else
            status=`eval "$command $disk_id" | grep "Health" | awk {'print $3'}`
            temp=`eval "$command $disk_id" | grep "Drive Temperature" | awk {'print $3'}`
            drive=`echo "$line" | cut -f1 -d " "`
            # echo "Status of $drive: $status"
            if [ "$status" ! "OK" ]; then
                echo "[ $status @ $temp °F ] $disk_name ($disk_id)" >> "$filename"_error
            fi
            echo "[ $status @ $temp °F ] $disk_name ($disk_id)"
        fi
    done
    echo ""
} > "$filename"

hour=`date +%H`
# Use 24 hour format for hours
start_normal_hours=8
end_normal_hours=18

if [ $hour -ge $start_normal_hours ] && [ $hour -lt $end_normal_hours ]; then
    mail -s \"Status\ Update\" -v "$email" < "$filename"
else
    mail -s \"Status\ Update\" -v "$email" < "$filename"_error
fi

# Cleanup
rm "$filename" "$filename"_error