aund is a program to allow a Unix system to act as an AUN or Econet
fileserver.  It supports:

* Clients from System 3 to RISC OS 3.70 (and probably later)
* Servers running Linux, NetBSD and probably others
* Connectivity by AUN (over UDP) or BeebEm emulated Econet
* Read/write operation
* Multiple virtual users (all under one Unix UID)
* Individual users (all under one Unix UID) with passwords and Privilege flags
* Owner permission on directories under the users URD
* Access permissions now supported
* Locked files now supported
* File Server can now be any station number not just 254
* NEWUSER command has been implemented, you can use NEWUSER user, or 
  NEWUSER group.user.  The login directory will be created based on what
  you entered.  Note: You cannot have a user created with the same name
  as a group.
* REMUSER command has been implemented.  This does not remove the user
  files or directory structure.

For general installation instructions, see the INSTALL file.  aund is
not particularly portable, and expects a BSDish or GNUish C library.
Building it on other systems is likely to be unpleasant.

aund is highly experimental and likely to have bugs.  Patches to fix
these will be gratefully received by Ben Harris <[email protected]>.
aund has a Web site at <http://bjh21.me.uk/aund/>.

Among aund's bugs are likely to be several that make it unsafe to run
on an untrustworthy network.  In any case, the fileserver protocol it
uses has serious security flaws.  In short, keep it off the Internet.

aund itself is released under the following licence:

Copyright (c) 1998, 2010 Ben Harris
Copyright (c) 2010 Simon Tatham
Copyright (c) 2010 James Woodcock
Copyright (c) 2015, 2021 Steve Inglis
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Various parts of its build system are derived from Automake, and these
have their own copyright information embedded in them.