A simple script to hotplug hard drives on linux

hotplug.sh

#!/bin/bash                                                                                                             
entries=($(find /dev/disk/by-id -type l -printf '%l %f\n' | grep -v '\(part\|wwn\)' | sed 's#../../##g' | tr '\n' ' ')) 
entries+=('' '' 'rescan' 'RESCAN')                                                                                      
choice=$(whiptail --notags --title "Hotplug" --menu "Select device" 16 100 9 "${entries[@]}" 3>&1 1>&2 2>&3)            
test -n "$choice" || exit 0                                                                                             
case $choice in                                                                                                         
    "rescan")                                                                                                           
        echo 'Rescan disks...'                                                                                          
        echo '- - -' > /sys/class/scsi_host/host0/scan                                                                  
        ;;                                                                                                              
    *)                                                                                                                  
        echo "Unplug $choice"                                                                                           
        [ -e /dev/$choice ] || exit -1                                                                                  
        echo 1 >/sys/block/$choice/device/delete                                                                        
        ;;                                                                                                              
esac