I'd like to know the I/O activity towards the filesystem.  I'd like my 
disk to stop spinning, to save battery power, but one of the processes 
keeps waking it up, and I do not know which one.  The sysinternals.com 
equivalent of filemon (which exists for Linux, but I do not run 
emulation) would be nice -- but any suggestion on how to pin down the 
offending processes would be appreciated.  Thanks.
 -- Ketil