표현좋군.

mount_usb() {

found=0

for i in /dev/sda?;do

if [ $i == "/dev/sda?" ];then

break

fi

mount $i ${USB} 2>/dev/null

if [ $? != 0 ];then

continue

fi

return 0

done

# Try to mount a USB without partition table

mount /dev/sda ${USB} 2>/dev/null

return $?

}