Attached is a pretty simple implementation of lsub. It doesn't implement any of the flags/options, but does the raw output.
Silence warning and comment a subtle bit.
Tighten up lsusb, default to "y".
Make groups handle multiple usernames on command line.
xioctl() error message should use hex ioctl number; that's what headers list.
Yet more ifconfig cleanup. (As described on the mailing list [CLEANUP] thread.)