This tool is in OpenBSD.
$ iostat -w 4
will display all the block devices, optical media, hard disks, USB media
and the data transfer rates.
Instead of displaying for all storage devices you can choose any particular
disk also.
If you are doing a dd this can be helpful.
Also dd will understand a SIGINFO signal which kill can send using which we
can know the status, bytes transferred and speed of transfer.
top can show generic info but not this I think.
-Girish
--
Gayatri Hitech
http://gayatri-hitech.com
