Detect USB Flash Drivers in linux

Following Script Display possible USB devices attached to the system : Tested on Ubantu 10.04 LTS

#!/bin/sh
#author sanjeewaF

for udi in $(/usr/bin/hal-find-by-capability --capability storage)
do
    device=$(hal-get-property --udi $udi --key block.device)
    vendor=$(hal-get-property --udi $udi --key storage.vendor)
    model=$(hal-get-property --udi $udi --key storage.model)

   if  [ `hal-get-property --udi $udi --key linux.sysfs_path | grep -i usb | wc -l` -gt 0 ]
   then
           echo "Possible USB:"
           parent_udi=$(hal-find-by-property --key block.storage_device --string $udi)
           mount=$(hal-get-property --udi $parent_udi --key volume.mount_point)
           label=$(hal-get-property --udi $parent_udi --key volume.label)
            media_size=$(hal-get-property --udi $udi --key storage.removable.media_size)
           size=$(( media_size/(1000*1000*1000) ))
            printf "$vendor  $model  $device  $mount  $label "${size}GB" \n"
    fi
done