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Re: ac(8) relicensed to a 2-clause BSD license

Hi Ed!

I've updated the license in NetBSD's source tree. I left your name out
since you didn't touch that version, according to CVS logs, so you
don't need to be bothered about bugs in it :)

Thanks for addressing this issue and then letting us know!

On Fri, Aug 31, 2012 at 08:41:39PM +0200, Ed Schouten wrote:
> Hello NetBSD hackers,
> As I was making some intrusive changes to the FreeBSD version of
> ac(8), I noticed that it wasn't BSD licensed. After discussing this
> with the original copyright holders, they agreed to relicense it under
> a 2-clause BSD license.
> The authors have also explicitly granted this right to other copies,
> such as the version shipped with NetBSD. So if you want, you are
> allowed to do this as well. I also saw NetBSD's version uses utmp,
> even though NetBSD supports utmpx as well. If there's any interest in
> porting ac(8) to utmpx, you are more than welcome to take a peek at
> our version.
> Happy hacking,
> --
> Ed Schouten <>
> ---------- Forwarded message ----------
> From: Ed Schouten <>
> Date: 2012/8/31
> Subject: svn commit: r239954 - head/usr.sbin/ac
> To:,,
> Author: ed
> Date: Fri Aug 31 18:26:39 2012
> New Revision: 239954
> URL:
> Log:
>   Relicense ac(8).
>   Though the license of the original ac(8) source code provides many
>   liberties, we are already somewhat violating it. The license requires us
>   to clearly comment any modifications to the source code, as the original
>   authors of course do not want to get bug reports for modified versions
>   of ac(8). This is something we have not done consistently.
>   The need for such a license clause has become less over time. It is very
>   unlikely that end users will contact the original authors, as the
>   copyright is from 1994. I contacted both the copyright holders. They
>   responded in a timely fashion and were more than willing to relicense it
>   to a 2-clause BSD license. To address any concerns about bug reports
>   going to the original authors instead of me, add my own name and email
>   address to the copyright statements as well.
>   MFC after:            1 month
>   Special thanks to:    Christopher Demetriou and Simon Gerraty
> Modified:
>   head/usr.sbin/ac/ac.c

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