Date: Sun, 22 Jan 2012 17:08:49 -0800 From: Doug Barton <dougb@FreeBSD.org> To: cliftonr@volcano.org Cc: freebsd-stable@freebsd.org Subject: Re: GENERIC make buildkernel error / fails - posix_fadvise Message-ID: <4F1CB321.50403@FreeBSD.org> In-Reply-To: <74dee0a775b93db4771f4de96eaf86c2@volcano.org> References: <20120111161110.4258969c.rpclark@tds.net> <CAN-pd=cPY=Eg1RintaBx6GAon3FsLm-X0h6yvSBxzq=EZ5ukbg@mail.gmail.com> <20120112200843.2a348d2f.rpclark@tds.net> <4F0F8E6F.8000909@FreeBSD.org> <74dee0a775b93db4771f4de96eaf86c2@volcano.org>
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On 01/22/2012 11:00, cliftonr@volcano.org wrote:
> On 12.01.2012 15:52, Doug Barton wrote:
>>>> chflags -R noschg /usr/obj/usr
>>>> rm -rf /usr/obj/usr
>>
>> It's much faster to do:
>>
>> /bin/rm -rf ${obj}/* 2> /dev/null || /bin/chflags -R 0 ${obj}/* &&
>> /bin/rm -rf ${obj}/*
>
> If I could just add one thing here, for those who might be tempted
> to immediately cut and paste that elegant command line:
>
> Consider, how does that command evaluate if the shell variable "obj"
> is not set, and you're running that literal string as root?
It wasn't intended that anyone actually do what you're considering. I
assumed that our users are smart enough to know that they have to
substitute the actual value of /usr/obj.
Doug
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