System administration command. Bind a raw character device to a block device, or query current raw device bindings. The rawnode should be a device in /dev/raw. The blockdevice may be specified by filename or by its major and minor device numbers.
Print information on all raw device bindings. Used with option -q.
Print usage information, then exit.
Print information on binding of the specified rawnode, or all raw nodes if accompanied with the -a option.