add or remove SCSI devices by rescanning the bus
scsiadd allows you to add or remove SCSI devices without having to restart
the computer. This is *NOT* a substitute for powering down to connect or
disconnect hardware unless it's specifically designed to be hot swappable.
Use it to enable the external SCSI drive you only use occasionally so is
powered off when the machine first boots, or to rescan the bus after moving
hot-swap drives around. scsiadd will also try to prevent you from doing
anything to disrupt drive names that are in use.
Similar functionality is available by echoing text to /proc/scsi/scsi
