#!/bin/bash
#(C)2007 DatuX
#returns fullpaths to discs that are not used

cd /sys/block
for SYS in *; do
    DEV=/dev/`echo $SYS| sed s@!@/@g`

    #range=1 (things like dm, loop, fd etc)?
    [ "`cat $SYS/range`" == "1" ] && continue;

    #try to open device exclusively, to see if its in use
    if openex $DEV; then
	echo $DEV
    fi
done